SlideShare a Scribd company logo
UNIT-2
AVERAGE
PERCENTAGE
PROFIT AND LOSS
1) Average=
2) Suppose a man covers a distance at x kmph and an equal
distance at y kmph then Average speed during the whole journey
=
PROBLEMS:
1) Find the average of the follwing set of
numbers
354,281,623,518,447,702,876
Ans:543
2)There are 6numbers 30,72,53,68,x and
87 out of which x is unknown.The
average of numbers is 60.What is the
value of x
ans:x=50
3)Find the average of first 40 natural
numbers
Ans: sum of n natural numbers =n(n+1)/2
Average =820/40=20.5
4)Find the average of the first 20 multiples
of 7
Ans: multiples of 7
7,14,21……………………..140
7(1+2+3+………………20)
Average = 7(1+2+3+………………20)/20
=7(20x21)/2)/20
=7(20x21/2x20)
=147/2=
5)The average of the 5 consecutive
numbers A,B,C,D,E is 48.What is the
product of A andE
Let the numbers A,B,C,D,E,
are x,x+1,x+2,x+3,x+4
5x+10/5=48
X=46
6). How much will be the average of
the squares of natural numbers
from 1 to 40?
verage of squares
of first 'n' natural
numbers
=
(n+1)(2n+1)
6
Average of
squares of
first 'n'
natural
numbers
=
(n+1)(2n+1)
6
Avera
ge of
squar
es of
numb
ers
from 1
to 40
=
(40+1)
(80+1)
=
41 x 81
= 553.5
6 6
7) The average age of a man and his son is
40 yrs .The ratio of their age is 11:5
.What is the son ‘s age
Ans: let the age of man and his son be
11x and 5x
average age =11x+5x /2=8x
8 x=40
X=5
Sn
son’s age =5x5=25 yrs.
7) The average age of a man and his son is
40 yrs .The ratio of their age is 11:5
.What is the son ‘s age
Ans: let the age of man and his son be
11x and 5x
average age =11x+5x /2=8x
8 x=40
X=5
Sn
son’s age =5x5=25 yrs.
7) The average age of a man and his son is
40 yrs .The ratio of their age is 11:5
.What is the son ‘s age
Ans: let the age of man and his son be
11x and 5x
average age =11x+5x /2=8x
8 x=40
X=5
Sn
son’s age =5x5=25 yrs.
8)Four years ago the average age of A and
B was 18 years.At present the average
age of A,B,C is 24. What would be the
age of ‘C’ after 8 years?
Ans: 36
PERCENTAGES

More Related Content

Similar to ppt UNIT 2 AVERAGE.pptx

Linear and quadratic equations in quantitative aptitude
Linear and quadratic equations in quantitative aptitude Linear and quadratic equations in quantitative aptitude
Linear and quadratic equations in quantitative aptitude Dr. Trilok Kumar Jain
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematicsDr. Trilok Kumar Jain
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematicsDr. Trilok Kumar Jain
 
Learn How To Cal-tec (Calculator-Techniques).pptx
Learn How To Cal-tec (Calculator-Techniques).pptxLearn How To Cal-tec (Calculator-Techniques).pptx
Learn How To Cal-tec (Calculator-Techniques).pptx
leemarya17
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematicsDr. Trilok Kumar Jain
 
Math quiz general
Math quiz generalMath quiz general
Math quiz general
KeshabPrasadParajuli1
 
Math for 800 06 statistics, probability, sets, and graphs-charts
Math for 800   06 statistics, probability, sets, and graphs-chartsMath for 800   06 statistics, probability, sets, and graphs-charts
Math for 800 06 statistics, probability, sets, and graphs-charts
Edwin Lapuerta
 
averages
averagesaverages
averages
Pawan Mishra
 
Probability-1.pptx
Probability-1.pptxProbability-1.pptx
Probability-1.pptx
MuskanKhan320706
 
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsQuestions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsDr. Trilok Kumar Jain
 
Questions of quantitative aptitude tests for competitive examinations
Questions of quantitative aptitude tests for competitive examinations Questions of quantitative aptitude tests for competitive examinations
Questions of quantitative aptitude tests for competitive examinations
Dr. Trilok Kumar Jain
 
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of  Quantitative Aptitude Tests For Competitive ExaminationsQuestions Of  Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsDr. Trilok Kumar Jain
 
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsQuestions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsDr. Trilok Kumar Jain
 
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsQuestions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Dr. Trilok Kumar Jain
 
Preparation for checkpoint math paper 2
Preparation for checkpoint math paper 2Preparation for checkpoint math paper 2
Preparation for checkpoint math paper 2Wina Winarni
 
Alhikmah preparation for checkpoint math paper 2
Alhikmah preparation for checkpoint math paper 2Alhikmah preparation for checkpoint math paper 2
Alhikmah preparation for checkpoint math paper 2Wina Winarni
 
Alhikmah preparation for checkpoint math paper 2
Alhikmah preparation for checkpoint math paper 2Alhikmah preparation for checkpoint math paper 2
Alhikmah preparation for checkpoint math paper 2Wina Winarni
 
Problems on Ages ppt.pdf
Problems on Ages ppt.pdfProblems on Ages ppt.pdf
Problems on Ages ppt.pdf
VamsiKrishna734923
 

Similar to ppt UNIT 2 AVERAGE.pptx (20)

Linear and quadratic equations in quantitative aptitude
Linear and quadratic equations in quantitative aptitude Linear and quadratic equations in quantitative aptitude
Linear and quadratic equations in quantitative aptitude
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematics
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematics
 
Learn How To Cal-tec (Calculator-Techniques).pptx
Learn How To Cal-tec (Calculator-Techniques).pptxLearn How To Cal-tec (Calculator-Techniques).pptx
Learn How To Cal-tec (Calculator-Techniques).pptx
 
Practice questions and tips in business mathematics
Practice questions and tips in business mathematicsPractice questions and tips in business mathematics
Practice questions and tips in business mathematics
 
Bca numer
Bca numerBca numer
Bca numer
 
Math quiz general
Math quiz generalMath quiz general
Math quiz general
 
Math for 800 06 statistics, probability, sets, and graphs-charts
Math for 800   06 statistics, probability, sets, and graphs-chartsMath for 800   06 statistics, probability, sets, and graphs-charts
Math for 800 06 statistics, probability, sets, and graphs-charts
 
averages
averagesaverages
averages
 
Algebra 1
Algebra 1Algebra 1
Algebra 1
 
Probability-1.pptx
Probability-1.pptxProbability-1.pptx
Probability-1.pptx
 
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsQuestions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive Examinations
 
Questions of quantitative aptitude tests for competitive examinations
Questions of quantitative aptitude tests for competitive examinations Questions of quantitative aptitude tests for competitive examinations
Questions of quantitative aptitude tests for competitive examinations
 
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of  Quantitative Aptitude Tests For Competitive ExaminationsQuestions Of  Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive Examinations
 
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsQuestions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive Examinations
 
Questions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive ExaminationsQuestions Of Quantitative Aptitude Tests For Competitive Examinations
Questions Of Quantitative Aptitude Tests For Competitive Examinations
 
Preparation for checkpoint math paper 2
Preparation for checkpoint math paper 2Preparation for checkpoint math paper 2
Preparation for checkpoint math paper 2
 
Alhikmah preparation for checkpoint math paper 2
Alhikmah preparation for checkpoint math paper 2Alhikmah preparation for checkpoint math paper 2
Alhikmah preparation for checkpoint math paper 2
 
Alhikmah preparation for checkpoint math paper 2
Alhikmah preparation for checkpoint math paper 2Alhikmah preparation for checkpoint math paper 2
Alhikmah preparation for checkpoint math paper 2
 
Problems on Ages ppt.pdf
Problems on Ages ppt.pdfProblems on Ages ppt.pdf
Problems on Ages ppt.pdf
 

Recently uploaded

1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx
JosvitaDsouza2
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
siemaillard
 
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
Nguyen Thanh Tu Collection
 
Synthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptxSynthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptx
Pavel ( NSTU)
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
GeoBlogs
 
Unit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdfUnit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdf
Thiyagu K
 
Operation Blue Star - Saka Neela Tara
Operation Blue Star   -  Saka Neela TaraOperation Blue Star   -  Saka Neela Tara
Operation Blue Star - Saka Neela Tara
Balvir Singh
 
How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...
Jisc
 
How to Make a Field invisible in Odoo 17
How to Make a Field invisible in Odoo 17How to Make a Field invisible in Odoo 17
How to Make a Field invisible in Odoo 17
Celine George
 
How to Break the cycle of negative Thoughts
How to Break the cycle of negative ThoughtsHow to Break the cycle of negative Thoughts
How to Break the cycle of negative Thoughts
Col Mukteshwar Prasad
 
ESC Beyond Borders _From EU to You_ InfoPack general.pdf
ESC Beyond Borders _From EU to You_ InfoPack general.pdfESC Beyond Borders _From EU to You_ InfoPack general.pdf
ESC Beyond Borders _From EU to You_ InfoPack general.pdf
Fundacja Rozwoju Społeczeństwa Przedsiębiorczego
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
Delapenabediema
 
special B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdfspecial B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdf
Special education needs
 
2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...
Sandy Millin
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
kaushalkr1407
 
Ethnobotany and Ethnopharmacology ......
Ethnobotany and Ethnopharmacology ......Ethnobotany and Ethnopharmacology ......
Ethnobotany and Ethnopharmacology ......
Ashokrao Mane college of Pharmacy Peth-Vadgaon
 
How to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERPHow to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERP
Celine George
 
Digital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and ResearchDigital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and Research
Vikramjit Singh
 
Overview on Edible Vaccine: Pros & Cons with Mechanism
Overview on Edible Vaccine: Pros & Cons with MechanismOverview on Edible Vaccine: Pros & Cons with Mechanism
Overview on Edible Vaccine: Pros & Cons with Mechanism
DeeptiGupta154
 
The approach at University of Liverpool.pptx
The approach at University of Liverpool.pptxThe approach at University of Liverpool.pptx
The approach at University of Liverpool.pptx
Jisc
 

Recently uploaded (20)

1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx1.4 modern child centered education - mahatma gandhi-2.pptx
1.4 modern child centered education - mahatma gandhi-2.pptx
 
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
GIÁO ÁN DẠY THÊM (KẾ HOẠCH BÀI BUỔI 2) - TIẾNG ANH 8 GLOBAL SUCCESS (2 CỘT) N...
 
Synthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptxSynthetic Fiber Construction in lab .pptx
Synthetic Fiber Construction in lab .pptx
 
The geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideasThe geography of Taylor Swift - some ideas
The geography of Taylor Swift - some ideas
 
Unit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdfUnit 8 - Information and Communication Technology (Paper I).pdf
Unit 8 - Information and Communication Technology (Paper I).pdf
 
Operation Blue Star - Saka Neela Tara
Operation Blue Star   -  Saka Neela TaraOperation Blue Star   -  Saka Neela Tara
Operation Blue Star - Saka Neela Tara
 
How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...How libraries can support authors with open access requirements for UKRI fund...
How libraries can support authors with open access requirements for UKRI fund...
 
How to Make a Field invisible in Odoo 17
How to Make a Field invisible in Odoo 17How to Make a Field invisible in Odoo 17
How to Make a Field invisible in Odoo 17
 
How to Break the cycle of negative Thoughts
How to Break the cycle of negative ThoughtsHow to Break the cycle of negative Thoughts
How to Break the cycle of negative Thoughts
 
ESC Beyond Borders _From EU to You_ InfoPack general.pdf
ESC Beyond Borders _From EU to You_ InfoPack general.pdfESC Beyond Borders _From EU to You_ InfoPack general.pdf
ESC Beyond Borders _From EU to You_ InfoPack general.pdf
 
The Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official PublicationThe Challenger.pdf DNHS Official Publication
The Challenger.pdf DNHS Official Publication
 
special B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdfspecial B.ed 2nd year old paper_20240531.pdf
special B.ed 2nd year old paper_20240531.pdf
 
2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...2024.06.01 Introducing a competency framework for languag learning materials ...
2024.06.01 Introducing a competency framework for languag learning materials ...
 
The Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdfThe Roman Empire A Historical Colossus.pdf
The Roman Empire A Historical Colossus.pdf
 
Ethnobotany and Ethnopharmacology ......
Ethnobotany and Ethnopharmacology ......Ethnobotany and Ethnopharmacology ......
Ethnobotany and Ethnopharmacology ......
 
How to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERPHow to Create Map Views in the Odoo 17 ERP
How to Create Map Views in the Odoo 17 ERP
 
Digital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and ResearchDigital Tools and AI for Teaching Learning and Research
Digital Tools and AI for Teaching Learning and Research
 
Overview on Edible Vaccine: Pros & Cons with Mechanism
Overview on Edible Vaccine: Pros & Cons with MechanismOverview on Edible Vaccine: Pros & Cons with Mechanism
Overview on Edible Vaccine: Pros & Cons with Mechanism
 
The approach at University of Liverpool.pptx
The approach at University of Liverpool.pptxThe approach at University of Liverpool.pptx
The approach at University of Liverpool.pptx
 

ppt UNIT 2 AVERAGE.pptx

  • 2. 1) Average= 2) Suppose a man covers a distance at x kmph and an equal distance at y kmph then Average speed during the whole journey =
  • 3. PROBLEMS: 1) Find the average of the follwing set of numbers 354,281,623,518,447,702,876 Ans:543 2)There are 6numbers 30,72,53,68,x and 87 out of which x is unknown.The average of numbers is 60.What is the value of x ans:x=50 3)Find the average of first 40 natural numbers Ans: sum of n natural numbers =n(n+1)/2
  • 4. Average =820/40=20.5 4)Find the average of the first 20 multiples of 7 Ans: multiples of 7 7,14,21……………………..140 7(1+2+3+………………20) Average = 7(1+2+3+………………20)/20 =7(20x21)/2)/20 =7(20x21/2x20) =147/2= 5)The average of the 5 consecutive numbers A,B,C,D,E is 48.What is the product of A andE
  • 5. Let the numbers A,B,C,D,E, are x,x+1,x+2,x+3,x+4 5x+10/5=48 X=46
  • 6. 6). How much will be the average of the squares of natural numbers from 1 to 40? verage of squares of first 'n' natural numbers = (n+1)(2n+1) 6 Average of squares of first 'n' natural numbers = (n+1)(2n+1) 6
  • 7. Avera ge of squar es of numb ers from 1 to 40 = (40+1) (80+1) = 41 x 81 = 553.5 6 6
  • 8. 7) The average age of a man and his son is 40 yrs .The ratio of their age is 11:5 .What is the son ‘s age Ans: let the age of man and his son be 11x and 5x average age =11x+5x /2=8x 8 x=40 X=5 Sn son’s age =5x5=25 yrs.
  • 9. 7) The average age of a man and his son is 40 yrs .The ratio of their age is 11:5 .What is the son ‘s age Ans: let the age of man and his son be 11x and 5x average age =11x+5x /2=8x 8 x=40 X=5 Sn son’s age =5x5=25 yrs.
  • 10. 7) The average age of a man and his son is 40 yrs .The ratio of their age is 11:5 .What is the son ‘s age Ans: let the age of man and his son be 11x and 5x average age =11x+5x /2=8x 8 x=40 X=5 Sn son’s age =5x5=25 yrs.
  • 11. 8)Four years ago the average age of A and B was 18 years.At present the average age of A,B,C is 24. What would be the age of ‘C’ after 8 years? Ans: 36