| 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 |
A) 250
B) 276
C) 280
D) 285
Correct Answer: D
Solution :
| Since, the month begins with a Sunday, so there will be five Sunday in the month |
| \[\therefore \]Required average \[=\frac{510\times 5+240\times 25}{30}\] |
| \[=\frac{8550}{30}=285\] |
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