#30 Average Quantitative Aptitude Question

If the arithmetic mean of seventy five numbers is calculated, it is 35. If each number is increased by 5, then mean of new numbers is 

A. 30
B. 35
C. 40
D. 50

Ans: C.Sol.
A.M. of 75 numbers = 35.
Sum of 75 numbers = (75 x 35) = 2625.
Total increase = (75x5) = 375.
Increased sum = (2625 + 375) = 3000.
Increased average = 3000 / 75 = 40.