Question 65

The average weight of 6 persons decreases by 2.5 kg when a new person comes in place of one of them weighing 70 kg. What is the weight (in kg) of the new person?

Solution

Given,

Total number of person = 6

Decrease in average weight = 2.5 kg

Total weight decreased = $$6\times\ 2.5\ =\ 15\ kg$$

Weight of Replaced person = 70 kg (given)

Weight of new person = 70 - 15 = 55 kg.

Hence, Option D is correct.

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