Question

By selling 8 dozen pencils , a shopkeeper gains the selling price of one dozen pencils. Find his gain per cent.​

Answer 1

Step-by-step explanation:

We know that S.P. = C.P. + Gain

⇒ S.P. of 8 dozen = C.P. of 8 dozen + S.P. of 1 dozen

⇒ S.P. of 7 dozen = C.P. of 8 dozen

⇒ By selling 7 dozen, he gain 1 dozen

Therefore, gain % =

7

1

×100% =14

7

2

%

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