SOLUTION: i tried multiplying and adding but i don't think i did it right here is my question: the ratio of the ages of 3 children is 1: 3 : 5. the oldest child is 12 years older than the

Question 882348: i tried multiplying and adding but i don't think i did it right here is my question: the ratio of the ages of 3 children is 1: 3 : 5. the oldest child is 12 years older than the youngest child. how old is the middle child.
thank you for the help!
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
The ratio of the youngest to the oldest is 1:5, part of the given combined ratio.

Oldest child, z,
z=12+x, using x for youngest child.
Think about their ratio again.

Solve for x, the age for the youngest child.

.

Look again at the full ratio expression. The second child is years of age.
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