Question

By selling a book for Rs. 10, the publisher loses $\frac{1}{11}$ of what it costs him. His cost price is ....

• A. Rs. 9
• B. Rs. 10
• C. Rs. 11
• D. Rs. 12

Answer 1

Answer: (C)

Rs. 11

Let's assume cost price $=x$
Selling price $=\text{Rs.}10$

Loss$=\frac{1}{11}.x$
$\text{Cost Price=Selling Price + Loss}$
$x=10+\frac{x}{11}$

$\frac{10x}{11}=10$
$x=\text{Rs.}11$
Answer (C) Rs. 11