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A library received an average of 510 visitors every Sunday and on other day 240. What is the average number of visitors in a month of 30 days beginning with Sunday?

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  • 285
  • 290
  • 300
  • 320
  • a

  • 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 = 285.

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