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1. In a boat there are 8 men whose average weight is increased by 1 kg when 1 man of 60 kg is replaced by a new man. What is weight of new comer?
Or, 8 × 1 = new comer - man going out
Or, new comer = 8 + 60
Or, new comer = 68 kg.
Solution:
Member in group × age increased = difference of replacementOr, 8 × 1 = new comer - man going out
Or, new comer = 8 + 60
Or, new comer = 68 kg.