2019 · Q81
A library has an average number of 510 visitors on Sunday and 240 on other days. What is the average number of visitors per day in a month of 30 days beginning with Saturday?
Elementary MathematicsStatistics
- A276
- B282
- C285
- D375
Explanation
A 30-day month starting Saturday has 5 Sundays and 25 other days. Average = (5x510+25x240)/30 = 8550/30 = 285.