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

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