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You can put this solution on YOUR website! f = father's age. s = son's age. the father is 30 years older than his son. f = s + 30 in 5 years, the father will be 3 times as old as his son. f + 5 = 3 * (s+5) what is the father's age? solve these 2 equations simultaneously to get your answer. solve for f in terms of s in the first equation.
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