Question
Shannon measured and recorded the mass of Gem, Gabriel and Tim. The average mass of these 3 children was 53 kg. The next day, Shannon realized that she had recorded Gem's mass wrongly. Gem's recorded mass was 9 kg more than her actual mass. What was the correct average mass of the 3 children?
3 m

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Shannon measured and recorded the mass of Gem, Gabriel and Tim. The average mass of these 3 children was 53 kg. The next day, Shannon realized that she had recorded Gem's mass wrongly. Gem's recorded mass was 9 kg more than her actual mass. What was the correct average mass of the 3 children?