The average weight of 15 men decreases by 2 kg when one of them, whose weight is 70 kg, is replaced by a new man. What is the weight of the new man?

A35

B45

C38

D40 ✓ Correct

Correct answer: (D) 40

Explanation

The new man weighs 40 kg.

Replacing lowers the average by 2 kg over 15 men.

Total weight drops by 15 x 2 = 30 kg.

New weight = old 70 - 30.

So the new man is 40 kg.

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