Question
Justin is 10 kg heavier than Japheth and 5 kg heavier than Eric. The average mass of the 3 men is 49 kg. Find the average mass of Japheth and Eric.
2 m

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Justin is 10 kg heavier than Japheth and 5 kg heavier than Eric. The average mass of the 3 men is 49 kg. Find the average mass of Japheth and Eric.