A library has an average of 175 visitors on Sundays and 75 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is :
Pick one:
A) 80  B) 90  C) 100  D) 110  E) 120
Explanation:   Since the month begins with a Sunday, so there will be five Sundays in the month,   Required average = (165 * 5 + 75 * 25) / 30 = 2700/30= 
<gadget id="calculator">2700/30</gadget>
<output>90</output>
90   Answer: 90) 90
<result>B</result>
A library has an average of 175 visitors on Sundays and 75 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is :