SOLUTION: The ages of mother and son are in a ratio of 10:3. If the mother is 40 years old, how old is the son?

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Question 291437: The ages of mother and son are in a ratio of 10:3. If the mother is 40 years old, how old is the son?
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
10/3=40/x
10x=120
x=12
moms 40
son 12