Question
Billy is 8 kg heavier than Perry and 7 kg heavier than Jenson. The average mass of the 3 men is 85 kg. Find the average mass of Perry and Jenson.
2 m

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Billy is 8 kg heavier than Perry and 7 kg heavier than Jenson. The average mass of the 3 men is 85 kg. Find the average mass of Perry and Jenson.