Question
Mr Chan is 45 kg heavier than his son, Luke and 21 kg heavier then his daughter, Fanny. Given that their total mass is 261 kg, how much does Mr Chan weigh?
4 m

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Mr Chan is 45 kg heavier than his son, Luke and 21 kg heavier then his daughter, Fanny. Given that their total mass is 261 kg, how much does Mr Chan weigh?