The Students in the hostel and their expenditure is in which proportion?
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Answer:
Initial expenditure = 420 and New Exp = 462
Let the original average expenditure be Rs.x then,
42(x - 1) = 35x + 42.........(bcz 1 rupee expenditure is reduced per student and we have total of 34+7=42 students )
⇒ 7x = 84
⇒ x = 12
Therefore original expenditure = Rs.(35 × 12)=Rs.420.
New Exp=420+42=462
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The students in the hostel and their expenditure is in 42 days in average proportional.
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