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In a famous restaurant rooms were numbered from 401 to 430, each room gives an earning of Rs. 4675/ day for the first 15 days a month and for the later half, Rs. 5370/ day per room. Find the average income room per day over the month of 30 days? A) 5700.5 B) 5872.7 C) 5900.5 D) 5022.5

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In a famous restaurant rooms were numbered from 401 to 430, each room gives an earning of Rs. 4675/ day for the first 15 days a month and for the later half, Rs. 5370/ day per room. Find the average income room per day over the month of 30 days? A) 5700.5 B) 5872.7 C) 5900.5 D) 5022.5  
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Answer: D)

Total number of rooms = 30

earning in 1st 15 days for 30 rooms

 = 15 * 4675* 30 = Rs. 2103750

earning in 2nd 15 days for 30 rooms

 = 15 * 5370 * 30 = Rs. 2416500

Average income per room per day over the month of 30 days

 = [ 2103750 + 2416500] / [ 30 * 30]

 = Rs. 5022.5


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