Mathematics, 22.02.2021 19:40 Circe7527

The oldest child in a family of four children is twice as old as the yougest. The two middle children are 13 and 16 years old. If the average age of the children is 13.25 , how old is the youngest child? Your answer is :

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The oldest child in a family of four children is twice as old as the yougest. The two middle childre...