In a hostel there were 100 students. 20 students left the hostel,the average budget is increased by rupees 10. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?  Pick one:
A) 2200  B) 1660  C) 5400  D) 2400  E) 1800
Let average is x   100x + 400 = 80(x+10)   x = 20   100 * 20 + 400= 
<gadget id="calculator">100 * 20 + 400</gadget>
<output>2_400</output>
2400   Answer:2400
<result>D</result>
In a hostel there were 100 students. 20 students left the hostel,the average budget is increased by rupees 10. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?