three years in 331.
On selling 100 pens, a man gains the selling price of 20 pens. Find the gain percent
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Answer:
20%
Step-by-step explanation:
CP = 100
SP=100+20 i.e. 120
P=SP-CP i.e. 120-100 = 20
P%=(P÷CP)×100
i.e. 20%
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