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 . 66
B . 43
C . 65
D . 67
Answer: Option A Answer: (a)Using Rule 18, If in the group of N persons, a new person comes at the place of a person of ‘T’ years, so that average age, increases by ‘t’ yearsThen, the age of the new person = T + N.tIf the average age decreases by ‘t’ years after entry of new person, then the age of the new person = T – N.tHere, N = 15, T = 42, t = 1.6 Weight of new oarsman = (42 + 15 × 1.6) kg. = (42 + 24) kg. = 66 kg.
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