The average weight of 15 oarsmen in a boat is increased by 1.6 kg when one of the crew, who weighs 42 kg is replaced by a new man. Find the weight of the new man (in kg).

Options

A. 65
B. 66
C. 43
D. 67

Answer

B

Explanation

Let the average weight of 15 Oarsmen at the start = x kg
Let the new man's weight = y kg.
According to question
`15x - 42 = 15(x + 1.6) - y`
`15x - 42 = 15x + 24-y`
`y = 24 + 42 = 66kg`