A library has an average of 330 visitors on Sundays and 240 on the other days. Find the average of the number of visitors per day in a month of 30 days, beginning with a Saturday.

255

In a month of 30 days started with saturday , Total number of Sunday = 5

Normal days = 25

Total number of visitors on Sunday = 5 × 330 = 1650

Total number of visitors on Normal day = 25 × 240 = 6000

Average of visitors in 30 days = \(\frac{1650 + 6000}{30}\)

= \(\frac{7650}{30}\) = 255