The average weight of 10 persons is increased by 3.5 kg, when one of them whose weight is 45.5 kg is replaced by a new man. The weight (in kg) of the new man is ____.
- A75.5
- B85.5
- C70.5
- D80.5
Solution & Step-by-step Explanation
Number of persons = 10
Increase in average weight = 3.5 kg
Total increase in weight = Number of persons×Increase in average=10×3.5=35 kg
Weight of the replaced man = 45.5 kg
Weight of the new man = Weight of replaced man+Total increase in weight
Weight of new man=45.5+35=80.5 kg
Increase in average weight = 3.5 kg
Total increase in weight = Number of persons×Increase in average=10×3.5=35 kg
Weight of the replaced man = 45.5 kg
Weight of the new man = Weight of replaced man+Total increase in weight
Weight of new man=45.5+35=80.5 kg