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# A father is thirteen times older than his son in 9 years he will be 4 times as old what age are they now?

Updated: 9/18/2023

Wiki User

13y ago

Equation 1. f = 13s

Equation 2. f + 9 = 4(s + 9) ie f + 9 = 4s + 36 ie f = 4s + 27

Substitute for f: 13s = 4s + 27

Subtract 4s from each side: 9s = 27

Divide each side by 9: s = 3 so f = 39 ( in 9 years s = 12, f = 48)

Wiki User

13y ago

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Q: A father is thirteen times older than his son in 9 years he will be 4 times as old what age are they now?
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