RRB Junior Engineer Stage 1 Model Papers 10

Question : 22 of 98

Marks: +1, -0

The average weight of 12 crewmen in a boat is increased by

1/3

kg, when one of the crewmen whose weight is 55 kg is replaced by a new man. What is the weight of that new men ?

Solution:

Short-cut method: Weight of new crewmen = Replaced man's weight + [No. of crew men × increment in average]

=55+12×1/3=59

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