Mathematics, 22.08.2019 20:30 sl1010

One adult and 10 children are in an elevator. if the adult's weight is 4 times the average (arithmetic mean) weight of the children, then the adult's weight is what fraction of the total weight of the 11 people in the elevator?

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One adult and 10 children are in an elevator. if the adult's weight is 4 times the average (arithmet...

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