Question

The selling price of 12 pens is equal to the cost price of 15 pens. Find gain per cent. please explain step by step!​

Answer 1

Answer:

Let the CP of each pen be Rs.x.

Then,

CP of 12 pens=Rs.12

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

now,gain=SP-CP=Rs.(15-12)=Rs.3

gain%=gain/cp*100

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

Hence,the gain

I hope this help you