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Average - General Aptitude

Q1:

The average weight of 8 person's increases by 2.5 kg when a new person comes in place of one of them weighing 65 kg. What might be the weight of the new person?

A 76 kg

B 76.5 kg

C 85 kg

D Data inadequate

E None of these

ANS:C - 85 kg

Total weight increased = (8 x 2.5) kg = 20 kg. Weight of new person = (65 + 20) kg = 85 kg.