Question
The average weight of 9 students is 41 kg. When the weights of Andy and Oliver are included, the average weight becomes 46 kg. Oliver is 7 kg lighter than Andy. What is Andy's weight?
3 m

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The average weight of 9 students is 41 kg. When the weights of Andy and Oliver are included, the average weight becomes 46 kg. Oliver is 7 kg lighter than Andy. What is Andy's weight?