Question
Abi measured and recorded the mass of Kathy, Archie, Ian, Gwen and Ken. The average mass of these 5 children was 53 kg. The next day, Abi realized that she had recorded Kathy's mass wrongly. Kathy's recorded mass was 5 kg more than her actual mass. What was the correct average mass of the 5 children?
3 m

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Abi measured and recorded the mass of Kathy, Archie, Ian, Gwen and Ken. The average mass of these 5 children was 53 kg. The next day, Abi realized that she had recorded Kathy's mass wrongly. Kathy's recorded mass was 5 kg more than her actual mass. What was the correct average mass of the 5 children?