Question
Daniel is 11 kg heavier than Elijah and 7 kg heavier than Fred. The average mass of the 3 men is 61 kg. Find the average mass of Elijah and Fred.
2 m

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Daniel is 11 kg heavier than Elijah and 7 kg heavier than Fred. The average mass of the 3 men is 61 kg. Find the average mass of Elijah and Fred.