A library has an average of 510 visitors on Sunday and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is___________?
Q1. A library has an average of 510 visitors on Sunday and 240 on other days. The average number of visitors per day in a month of 30 days beginning with a Sunday is___________?
Answer: 285
Explanation: 30-day month starting Sunday has 5 Sundays and 25 other days; total visitors = 5×510+25×240 = 8550; average = 8550/30 = 285.