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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