Question
Mr Yap is 47 kg heavier than his son, Justin and 21 kg heavier then his daughter, Winnie. Given that their total mass is 256 kg, how much does Mr Yap weigh?
4 m

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Mr Yap is 47 kg heavier than his son, Justin and 21 kg heavier then his daughter, Winnie. Given that their total mass is 256 kg, how much does Mr Yap weigh?