Question

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

• A. $25\%$
• B. $33\frac{1}{3}$ %
• C. $50$
• D. $66\frac{2}{3}$ %

Answer 1

The correct option is C $50$

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

Let the cost price of $1$ pen is $Re1$

Cost of $8$ pens $=Rs8$

Selling price of $8$ pens $=Rs12$

$Gain\%=(\frac{Gain}{costprice}\times 100)\%$

$=(\frac{12-8}{8}\times 100)\%$

$=(\frac{4}{8}\times 100)\%$

$=50\%$