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There were 45 students in a hostel, if the numbers of students increased by 7, the expenses of the mess were increased by Rs. 39 per day wh…

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There were 45 students in a hostel, if the numbers of students increased by 7, the expenses of the mess were increased by Rs. 39 per day while the average expenditure per head diminished by Re.1. What

ARs. 555
BRs. 585
CRs. 685
DRs. 655

Correct answer: B

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Discussion 1

CCommunity30 Jun 2021

Rs. 585

Let the original expenditure be Rs.x

Original average expenditure = X/45

New average expenditure = (x+39)/52

So (x/45) - ((x+39) / 52) = 1 so x = 585

so, original expenditure is Rs 585