Question

1. If the selling price of 15 pens is equal to cost price of 12 pens. Find his gain or loss percent.
(answer in detail please)​

Answer 1

Let cost price of each pen be x

Then,

CP of 12 Pens =12₹

SP of 12 pens = CP of 15 Pens=₹15

now gain,

SP-CP=15-12=3

gain%=gain/CP*100

=3/12*100

=25%

hence, the gain =25%

Answer 2

Answer:

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25

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If the selling price of 15 pens is equal to cost price of 12 pens. Find his gain or loss percent.

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