In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?  Choose the most appropriate option
A) 5402 B) 542 C) 5400 D) 5429 E) 5421
100x + 400 = 12(x – 5)   x = 50   100 * 50 + 400= 
<gadget id="calculator">100 * 50 + 400</gadget>
<output>5_400</output>
5400   Answer:5400
<result>C</result>
In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?