### A library has an average of 510 visitors on Sundays and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is-

A. 250 B. 276 C. 280 D. 285 Answer: Option D

### Solution(By Apex Team)

Since the month begins with a Sunday, so there will be five Sundays in the month. $\begin{array}{l}\therefore\text{ Required average }\\ =\left(\Large\frac{510\times5+240\times25}{30}\right)\\ =\Large\frac{8550}{30}\\ =285\end{array}$

A. 20
B. 21
C. 28
D. 32

A. 18
B. 20
C. 24
D. 30

A. 10 years
B. 10.5 years
C. 11 years
D. 12 years