SOLUTION: James is as twice as old as his son. in 20 years their combined ages will be 115 years. how old is his son?

Question 741602: James is as twice as old as his son. in 20 years their combined ages will be 115 years. how old is his son?

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
James is as twice as old as his son. in 20 years their combined ages will be 115 years. how old is his son?
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Equations:
j = 2*s
j+20 + s+20 = 115
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Substitute for "j" and solve for "s":
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2s+20 + s+20 = 115
3s + 40 = 115
3s = 75
son's age = 25
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James's age = 3s = 75
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Cheers,
Stan H.
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