There was one mess for 30 boarders in a certain hostel On the number of boarders being increased by ...........

Quantitative Aptitude ( CCS) Average

There was one mess for 30 boarders in a certain hostel. On the number of boarders being increased by 10, the expenses of the mess were increased by Rs. 40 per month while the average expenditure per head diminished by Rs. 2. Find the original monthly expense.

Rs. 390

Rs. 410

Rs. 360

Rs. 480

छोटे Courses बड़े Results

Master Average

Prepare through Micro-courses

Try Now

Explanation:

30 boarders = x
Average expenditure for 30 boarders= x / 30
40 boarders = x + 40
Average Expenditure for 40 boarders
=x / 40 + 40
The difference = x / 30 + x / 40 ? 40 = 2
x = 360

Hence, option 3 is the correct answer.