scarlettrimmer scarlettrimmer
  • 03-03-2021
  • Mathematics
contestada

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 ashundeiji45
  • 03-03-2021

Answer:

3

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