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
Data inadequate
B 85 kg
C
76 kg
D 76.5 kg
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.
