Question : The average weight of the group of 12 players increases by 1.5 kg when a player who weighs 63 kg is replaced by a new player. What is the weight of the new player?
Option 1: 84 kg
Option 2: 81 kg
Option 3: 83 kg
Option 4: 79 kg
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Correct Answer: 81 kg
Solution : The total increase in weight for the group of 12 players = 1.5 × 12 = 18 kg This increase is due to the replacement of a player who weighs 63 kg with a new player. Therefore, the weight of the new player = 63 + 18 = 81 kg Hence, the correct answer is 81 kg.
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