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13-01-2022 Average

Q. 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


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Dapzoi Verified
Commented on 2022-01-15 12:17:32 (IST)
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