Question

If the price of a book is reduced by Rs 5, a person can buy 5 more books for the same amount, i.e.. Rs 300. Find the original list price of the book.

• A. 15
• B. 20
• C. 25
• D. 30

Answer 1

The correct option is B

20

Let the original list price of the book be Rs x. $\therefore$ Number of books bought for Rs 300 = $\frac{300}{x}$ Reduced list price of the book = Rs( x -- 5 ) $\therefore$ Number of books bought for Rs 300 = $\frac{300}{x-5}$ It is given that $\begin{array}{cccccc}\frac{300}{x-5}=\frac{300}{x}=5Onsolving\Rightarrow x=20,x=-15\Rightarrow x=20& & & & & \left[x=-15isnotpossible\right]Hence,thelistpriceofthebook=Rs20.\end{array}$