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Mathematics, 25.04.2021 18:20 SassyBanana
The average age of a group of 7 people is 8. How many people are each 5 years old to this group? If he joins more, will the group's new average age be 6?
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The average age of a group of 7 people is 8. How many people are each 5 years old to this group?
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