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Aptitude question and answer on Average
Question : The average weight of 8 men is increased by 1.5 kg when one of the men who weights 65kg is replaced by a new man. The weight of the new man is
A. 76 kg
B. 76.5 kg
C. 76.7 kg
D. 77 kg
Answer : D. 77 kg
Total weight increased = (8 x 1.5) kg= 12 kg.
Weight of new man = (65+12) kg = 77 kg.