### A librarian purchased 50 storybooks for his library. But he saw that he could get 14 books more by spending Rs. 76 more but per book average becomes Rs. 1 less. The average price (in Rs.) of each book he bought, was :

**A.** 15

**B.** 25

**C.** 20

**D.** 10

## Show Answer

###
Answer-D

Solution-

Solution(By Apex Team)

Let the average price of 1 book = Rs. 1
$\begin{array}{l}\text{According to the question,}\\
\begin{array}{l}\Rightarrow\left(\Large\frac{50x+76}{50+14}\right)=(x-1)\\
\Rightarrow\left(\Large\frac{50x+76}{64}\right)=x-1\\
\Rightarrow50x+76=64x-64\\
\Rightarrow140=14x\\
\Rightarrow x=Rs.10\end{array}\end{array}$
Therefore average price of 1 book = Rs. 10