If the arithmetic

Question

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

Options:

A . 30

B . 40

C . 70

D . 90

Answer: Option B

A.M. of 75 numbers = 35

sum of 75 numbers = 7 x 35 = 2625

Total increase = 75 x 5 = 375

increased sum = 2625 + 375 + 3000

Increased average = ` 3000/75` = 40.

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