Question

The selling price of 12 pens is equal to the cost price of
15 pens.what is the gain percent?​

Answer 1

Step-by-step explanation:

Let the CP of each pen be Rs. x

CP of 12 pens = Rs. 12

SP of 12 pens = CP of 15 pens = Rs. 15

no gain = SP-CP = Rs.(15-12) = Rs. 3

gain%= gain/cp*100

=(3/12*100)% = 25%

Hence the gain% = 25%

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