Question
The average weight of 10 pupils is 40 kg. When the weights of Perry and Brandon are included, the average weight becomes 46 kg. Brandon is 10 kg lighter than Perry. What is Perry's weight?
3 m

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The average weight of 10 pupils is 40 kg. When the weights of Perry and Brandon are included, the average weight becomes 46 kg. Brandon is 10 kg lighter than Perry. What is Perry's weight?