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Q.
The average weight of 8 persons 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.
70 kg
B.
75 kg
C.
80 kg
D.
85 kg
View Answer
Correct choice: D
Explanation:
Total weight increased = (8 x 2.5) kg = 20 kg. Weight of new person = (65 + 20) kg = 85 kg.
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