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