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Percentage
All simple percent problems have three parts:
โ€ข Rate is percent (%)
โ€ข Base represents whole or a quantity equal to
100%
Word โ€œofโ€ generally relates to the base
โ€ข Percentage is part or quantity of percent of
base
Word โ€œisโ€ generally relates to the percentage
Ways or formula to solve percent problems:
1. Using Fractions
30% of 1800 =
30
100
ร— 1800
= 30 ร— 18
= 540
18
2. Using ratio and Proportion
P
1800
=
30
100
100P = 54000
100P
100
=
54000
100
P = 540
3. Formula for Percentage
P = R ร— B
= 0.30 ร— 1800
= 540
**always write the rate as a decimal
Percentage.pptx

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Percentage.pptx

  • 2. All simple percent problems have three parts: โ€ข Rate is percent (%) โ€ข Base represents whole or a quantity equal to 100% Word โ€œofโ€ generally relates to the base โ€ข Percentage is part or quantity of percent of base Word โ€œisโ€ generally relates to the percentage
  • 3. Ways or formula to solve percent problems: 1. Using Fractions 30% of 1800 = 30 100 ร— 1800 = 30 ร— 18 = 540 18
  • 4. 2. Using ratio and Proportion P 1800 = 30 100 100P = 54000 100P 100 = 54000 100 P = 540
  • 5. 3. Formula for Percentage P = R ร— B = 0.30 ร— 1800 = 540 **always write the rate as a decimal