Question

There were 35 students in a hostel. If the number of students increased by 7. the expenses of
the mess were increased by Rs. 42 per day while the average expenditure per head
diminished by Re. 1. The original expenditure of the mess was: (a) Rs 400 (b: Rs. 420
(c) Rs. 432 (0) Rs. 442​

Answer 1

Answer:

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Step-by-step explanation:

Let original average expenidture was X.

Total expenditure = 35X.

Now, According to question,

35X+42 = (X - 1)*42

35X + 42 = 42X - 42

7X = 84

X = Rs. 12

So, Initial expenditure would be 12 *35 = Rs. 420