Question
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:
Answer: Option D
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Since the month begins with a Sunday, to there will be five Sundays in the month.
Required avarage = \(\left(\frac{510\times5+240\times25}{30}\right)\)
= \(\frac{8550}{30}\)
= 285
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