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 :

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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 = 285.

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 :

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