There are 35 students in a hostel. If the no. of students increases by 7, the expenses of the mess increase by Rs.42/day while the average expenditure per head diminishes by Rs1. Find the original expenditure of the mess?	Select:
A) Rs. 30  B) Rs. 35  C) Rs. 42  D) Rs. 48  E) Rs. 52
Suppose the average join the mess , total expenditure = 35x + 42   Now, the average expenditure = (35x + 42)/ (35 + 7) = x – 1   or, 35x + 42 = 42x – 42   or, x = 12   Thus the original expenditure of the mess = 35 x 12 = Rs. 42   Rs. 42
<result>C</result>
There are 35 students in a hostel. If the no. of students increases by 7, the expenses of the mess increase by Rs.42/day while the average expenditure per head diminishes by Rs1. Find the original expenditure of the mess?