There were 35 students in a hostel. Due to the admission of 7 new students, ;he expenses of the mess were increased by Rs. 42 per day while the average expenditure per head diminished by Rs 1. Wbat was the original expenditure of the mess?	Choose the correct option: A) 320 B) 120 C) 400 D) 420 E) 514
Sol. Let the original average expenditure be Rs. x. Then,   42 (x - 1) - 35x=42	ïƒ³	7x= 84	ïƒ³	x =12.   Original expenditure = Rs. (35 x 12) =Rs. 420. .   ANSWER 420
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There were 35 students in a hostel. Due to the admission of 7 new students, ;he expenses of the mess were increased by Rs. 42 per day while the average expenditure per head diminished by Rs 1. Wbat was the original expenditure of the mess?