A library has an average of 150 visitors on sundays and 120 on other days . The avearge number of visitors per day in a month of 30 days beginning with a sunday is? Choose the correct choice from the following options
A) 50
B) 75
C) 150
D) 125
E) 100

Rationale: "since the month begin with sunday , so there will be five sundays in the month required average = ( 150 * 5 + 120 * 25 ) / 30 = 3750 / 30 = 125 answer is d"
Answer: D