Question

the selling price of 12 pens is equal to the cost price of 15 pens find the gain percent​

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=25%.

Answer 2

ANSWER:-

Given

the selling price of 12 pen is equal to cost price of 15 pen

so,

cost price=12 pen

selling price=15pen

it clearly mentioned above sp is greater than cp

so,

gain=15-12

=3

hence

g%=3*100/12

=25%