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18-05-2018
Mathematics

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The average age of a group of friends is 27. if the sum of their ages is 324, how many friends are in this group?

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Аноним Аноним

21-05-2018

average = (sum of ages)/(number of people)

27 = 324/n
n = 324/27 = 12

there are 12 friends in the group

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