Question

a shopkeeper by selling 21 items earns a profit equal to the selling price of 1 item.what is his profit percentage?

Answer 1

Answer:

5%

Step-by-step explanation:

Let say cp of 1 = c

Selling price of 1 = s

Selling price of 21 = 21s

Cost price of 21 = 21c

Profit = 21s - 21c

Profit = s given

21s - 21c = s

20s = 21c

s = 21c/20

Profit % = {(s-c)/c }* 100

= {(21c/20 - c)/c}×100

= 5 %