Question

A shopkeeper buys pens at the rate of 75 rupees per 100. For how much should she sell each pen so as to make a gain of 15% ?​

Answer 1

Answer:

please mark brainliest

Let the CP of each pen be Rs.x.

Then,

CP of 5 pens=Rs. 5

SP of 5 pens=CP of 7 pnes=Rs. 7

now,gain=SP-CP=Rs.(7-5)=Rs. 2

gain%=gain/cp*100

=(2/5 *100)%= 40%

Hence,the gain=40%.