Question

A student buys a pen for Rs 90 and sells it for Rs 100. Find his gain and gain percent.

Answer 1

We know that the cost price of pen = Rs 90

Selling price of pen = Rs 100

By using the formula,

Gain = selling price – cost price

= 100 – 90

= Rs 10

By using the formula,

Gain % = (gain/cost price) × 100

= (10/90) × 100

= 100/9

= 11 1/9 %