The average weight of eleven players of the state level cricket team is 109 kg. On joining the coach, the average weight of the team increases by 1kg. How much is the weight of the coach (in kg)?
121
121 is correct.
Total weight of the 11 players \(=11\times 109=1199\) kg.
With the coach there are 12 members and the mean becomes \(109+1=110\) kg, so the new total is \(12\times 110=1320\) kg.
Weight of the coach \(=1320-1199=121\) kg.
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