Question

A bookseller sells all his books at a profit of 10%. If he buys a book from the distributor at Rs 200, how much does he sell it for?

Answer 1

Given profit % = 10% CP = Rs. 200
Since $=\left\{\frac{(100+\text{profit}\%)}{100}\right\}\times CP$
$=\left\{\begin{array}{c}\frac{100+10}{100}\end{array}\right\}\times 200$
$=\left\{\begin{array}{c}\frac{110}{100}\end{array}\right\}\times 200=Rs.220$
The bookseller sells the book for Rs. 220.