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Mean of a subnet problems Maths Averages Mean of a subset problems (09/07/20) There are 15 children at a birthday party. The mean age of

Mean of a subnet problems

Maths

Averages

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Mean of a subset problems (09/07/20) There are 15 children at a birthday party. The mean age of the 15 children is 7 years. 9 of the 15 children are boys. The mean age of the boys is 5 years. Work out the mean age of the girls. . . . . . . ........... ............ years (Total for question = 3 marks)

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