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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