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

Options

A. 276
B. 285
C. 250
D. 280

Answer

B

Explanation

We know that in a 30 days month beginning with a Sunday, there will be 5 Sundays and 25 other days. Average No. of visitors on Sunday = 510
Average No. of visitors on other days = 240.
So, average number of visitors per day in a 30 days
month = `(510 xx 5 + 240 xx 25)/30 = 285`
So, the average number of visitors per day in a 30 days month = 285.