A library has an average number of 510 visitors on sunday…

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A library has an average number of 510 visitors on sunday and 240 on other days. The average number of visitors per day in a month of 30 day beginning with sunday is –

  1. A. 285
  2. B. 295
  3. C. 300
  4. D. 290

Answer: Option A

Here is complete explanation of A library has an average number of 510 visitors on sunday….

Solution(By ExamCraze Team)

According to the question
Average number of visitors on sunday = 510
Average number of visitors on other days = 240
∴ If month start on sunday then there are five sundays in a month and 25 other days.
∴ Number of visitors on sundays = 510 × 5 = 2550
Number of visitors on other days = 240 × 25 = 6000
∴ Average visitors = $$frac{2550 + 6000}{30}$$   = 285

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