Question
Mr Chua is 40 kg heavier than his son, Luis and 29 kg heavier then his daughter, Sarah. Given that their total mass is 231 kg, how much does Mr Chua weigh?
4 m

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Mr Chua is 40 kg heavier than his son, Luis and 29 kg heavier then his daughter, Sarah. Given that their total mass is 231 kg, how much does Mr Chua weigh?