Averages Q29

29. 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

Explanation:

Since the month begins with a Sunday, to there will be five Sundays in the month.

Required average	= 510 x 5 + 240 x 25 30
	= 8550 30
	= 285