Correct Answer - Option 1 : 50.5 kg
Given∶
The average weight of 20 players = 40 kg
The average weight increased by 500 g if weight of coach is added.
Formula Used∶
Sum of observation = Average × Number of observations
Calculation∶
Average weight of 20 players = 40 kg
Total weight of 20 players = 40 × 20 = 800 kg
Average weight of 20 players and the coach = (40 + 0.5) kg = 40.5 kg
Total weight of 20 players and the coach = (40.5 × 21) kg = 850.5 kg
So, weight of the coach = 850.5 kg - 800 kg = 50.5 kg
∴ The weight of Coach is 50.5 kg.
