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In a boat 25 persons were sitting. Their average weight increaskilogram when one man goes and a new man comes in. The weightman is 70 kgs. Find the weight of the man who is going.1) 50 Kgs 21 45 Kgs 3) 54 Kgs42 Kg |
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Answer» W1 = avg weight initially 25 * W1 = weight of 25 persons in itiallyLet weight of the man who leaves = Wremaining 24 persons weight is = 25 W1 - WWhen new man comes in total weight = 25 W1 - W + 70 Average weight of the new set of 25 persons = (25 W1 - W +70) / 25 = W1 + 1 one more than previous average=> 25W1 - W +70 = 25 W1 + 25=> W = 45 Kganswer |
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