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
76 kg
B
76.5 kg
C
85 kg
D
70 kg
Correct Answer: 85 kg
Total weight increased = (8x2.5)kg = 20kg so,Weight of new person = (65 + 20) = 85kg