Question

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

• A. 25%
• B. 33(1/3)%
• C. 50%
• D. 66(2/3)%
• E. None of these

Answer 1

The correct option is C

50%

Let C.P of each pen be Re. 1. Then, C.P of 8 pens = Rs. 8; S.P of 8 pens = Rs, 12.

$\therefore$ Gain %= $\left(\frac{4}{8}\times 100\right)\%=50\%.$