Question
Julian is 11 kg heavier than Valen and 7 kg heavier than Rael. The average mass of the 3 men is 78 kg. Find the average mass of Valen and Rael.
2 m

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Julian is 11 kg heavier than Valen and 7 kg heavier than Rael. The average mass of the 3 men is 78 kg. Find the average mass of Valen and Rael.