A library has an average of 510 visitors on Sundays and 240 on other

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 Saturday is

  1. 250
  2. 276
  3. 280
  4. 285
Anurag Mishra Professor Asked on 19th April 2016 in Maths.
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  • 1 Answer(s)

    Answer: (4) 285

    Solution:-
    The average visitors on Sunday = 510
    The number of Sunday in 30 days if beginning with Sundays = 5
    Total visitors on Sunday in 30 days = 5 x 510
    = 2550

    The number of remaining other days = 25
    The average visitors on other days = 240
    Then, the total visitors on other days = 240 x 25
    = 6,000

    Total visitors in a month = 6,000 + 2550
    = 8,550

    The average of visitors in month of 30 days = 8,550/30
    = 285

    Hence, the correct answer is option (4) 285.

    Anurag Mishra Professor Answered on 20th April 2016.
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