- Home
- Standard 13
- Quantitative Aptitude
4.Average
medium
A student bought $4$ books for $Rs. \,120$ from one book shop and $6$ books for $Rs.\, 150$ from another. The average price (in rupees), he paid per book was
A
$27$
B
$27.50$
C
$135$
D
$138$
Solution
cost of $10$ books $= Rs\, (120+150)\,= Rs. \,270$
Average cost $= Rs \, cdot\left(\frac{270}{10}\right)= Rs .27$
Standard 13
Quantitative Aptitude