The average weight of 10 persons increases by 1.5 kg when a 45 kg person is replaced by another person. The new person weighs
The average weight of 10 persons increases by 1.5 kg when a 45 kg person is replaced by another person. The new person weighs
A: 50
B: 60
C: 70
D: 75
Increase in average = 1.5 kg. Total increase = 1.5 × 10 = 15 kg. New person weight = 45 + 15 = 60 kg. Therefore the weight of the new person is 60 kg.