scarlettrimmer scarlettrimmer

03-03-2021
Mathematics

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There are 15 children at a birthday party.
The mean age of the 15 children is 7 years.
9 of the 15 chadren are boys.
The mean age of the boys is 5 years.
Work out the mean age of the girls.

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ashundeiji45 ashundeiji45

03-03-2021

Answer:

3

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