In a boat 25 persons were sitting. Their average weight increased one ...
Weight increased per person is 1 kg. Total increase in weight = 25 kgs Weight of new man is 70 kgs, (Which means his weight is 25 kgs heavier) The weight of the old man was 70 - 25 = 45 kgs
View all questions of this testIn a boat 25 persons were sitting. Their average weight increased one ...
Solution:
Let the weight of the man who is going be x kg.
Given that the average weight increased by 1 kg when one man goes and a new man comes in.
So, we can write the equation as follows:
Total weight of 25 persons + Weight of new person - Weight of person who is going = New average weight * 26
25x + 70 - x = (25x + 70 + 1)/26
24x + 70 = (25x + 71)/26 * 26
24x + 70 = 25x + 71
25x - 24x = 71 - 70
x = 1
Therefore, the weight of the man who is going is 1 kg.
Hence, the correct option is (a) 45.