If the cost price of 12 pens is equal to the selling price of 8 pens, the gain percent is ?

Question

A. 50%

B. 60%

C. 10%

D. 12%

Solution:

We know we will need gain amount to get gain percent, right.

So lets get gain first.

Let the cost price of 1 pen is Rs. 1

Cost of 8 pens = Rs. 8

Selling price of 8 pens = 12

Gain = 12 – 8

= 4

Gain% = (gain/cost × 100)%

= (4/8 × 100)%

= 50%

Hence, the gain percent is 50%.