1)

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 so there will be five sundays in the month .
Required avearge = 510×5+240×2530=855030=285