Question

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

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40 points question​

Answer 1

Answer:

12/15*100

240/3

80%

100-80=20%

this is the answer

Answer 2

Step-by-step explanation:

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=25%.