Question

Que. 5
There are 50 students in a hostel. If 20 new students joined, the total expenditure increased by Rs.
1100 while the average expenditure increased by Rs. 10. What was the initial average expenditure?
1. Rs 25
2. Rs 30
3. RS 27.5
4. RS 20
5. Rs 15
Solution
short trick me btana​

Answer 1

Answer:

50+20=70

1100÷10=110

Ans = 110 -70=30