Question
Eva and Zara's total mass is 48 kg. Zara and Gem's total mass is 90 kg. Gem is three times as heavy as Eva. What is the average mass of the three friends?
3 m

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Eva and Zara's total mass is 48 kg. Zara and Gem's total mass is 90 kg. Gem is three times as heavy as Eva. What is the average mass of the three friends?