Posted by Anonymous on Sunday, October 2, 2011 at 11:56pm.
"I think we can say that the father is 24 years older than John, regardless of how old they are. If J represents John's age now, then 3J represents John's father's age. This is equal to J+24, so we set an equation
3J = J + 24
2J = 24
J = 12, 3J = 36
John is 12, and his father is 36."
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