### 30 pens and 75 pencils altogether were purchased for Rs. 510. If the average price of a pencil was Rs. 2, what was the average price of a pen ?

**A.** Rs. 9

**B.** Rs. 10

**C.** Rs. 11

**D.** Rs. 12

## Show Answer

###
Answer-D

Solution-

Solution(By Apex Team)

$\begin{array}{l}\text{According to the question,}\\
\text{30 pens + 75 pencils}=\text{Rs.}\ 512\\
\text{Average price of a pencil = Rs. 2}\\
\text{Price of 75 pencils}\\
\text{= 2 × 75 = Rs. 150}\\
\text{∴ Price of 30 pens}\\
\text{= 510 – 150 = Rs. 360}\\
\text{∴ Average price of pen}\\
=\Large\frac{360}{30}\\
=\text{Rs.}\ 12\end{array}$