Mathematics, 17.06.2021 17:30 SignoraPenguino

The mean of the masses of a group of four students is 30 kg. One student joins the group. The mean of the masses og the five students is 32 kg. Find the mass of the student who joined the group.

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The mean of the masses of a group of four students is 30 kg. One student joins the group. The mean o...

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