This document is a lesson on profit and loss in mathematics that introduces key concepts and examples. It explains that profit occurs when an item is sold for more than it was bought for, while loss is when an item is sold for less. Basic profit and loss calculation formulas are provided. Two examples are given, one showing a profit and one a loss. Students are instructed to complete homework problems calculating profit and loss, including using percentages.

1. Welcome
Md. Abdul Quddus
Department: Mathematics
Campus : 05

2. Chapter : Two
Profit & Loss
Lesson declaration

3. Learning outcome
After this lesson students . . .
• will be able to explain profit & Loss
• Calculate basic problem.

4. Profit and Loss
Profit : When you sell something for
MORE than you bought it.
Loss : When you sell something for
LESS than you bought it.
PROFIT = Selling Price – Buying Price
LOSS = Buying Price – Selling Price

5. Profit and Loss
Example 2
I bought a bunch of flowers for Tk.5.50 and tried to sell
them for a profit. But I found it difficult to sell them. I sold
them for Tk.4.00 before they went off.
Example 1
If I buy a Play station for Tk.100 and sell it for Tk.120.
Tk.120-Tk.100 = Tk. 20I have made a PROFIT of
I made a LOSS of TK.5.50 – Tk.4.00 = Tk.1.50

6. Now try
If I buy a Play station for Tk.80 and
sell it for Tk.120.What is the
percentage of profit?
Percentages

7. Home work
 Solve exercise 2.1 – Question 1-6

8. Thank you