a shopkeeper by selling 21 items earns a profit equal to the selling price of 1 item.what is his profit percentage?
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Answer:
5%
Step-by-step explanation:
Cost price of 1 = c
Selling price if 1 = s
Selling price of 21 = 21s
Cost price of 21 = 21c
Profit = 21s - 21c
Profit = s given
s = 21s -21c
20s = 21c
Profit % = (s/21c)× 100
= (s/ 20s) × 100
= 5%
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