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 :  Choose the correct choice from the following:
A) 285 B) 290 C) 297 D) 305 E) None of these
Explanation:   Since the month begins with a Sunday, so there will be five Sundays in the month,   Required average = (510 * 5 + 240 * 25) / 30 = 8550/30= 
<gadget id="calculator">8550/30</gadget>
<output>285</output>
285. 285nswer: 285
<result>A</result>
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 :