SOLUTION: Robert is one-half as old as his father. Twelve years ago, Robert was one-third as old as his father was then. Find their present ages. I only got as far as their age now is:

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Question 267633: Robert is one-half as old as his father. Twelve years ago, Robert was one-third as old as his father was then. Find their present ages.
I only got as far as their age now is:
Robert = 1/2 x
Father = x
Twelve years ago:
Father = x-12
Robert = 1/3 (x -12) ???
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Robert is one-half as old as his father. Twelve years ago, Robert was one-third as old as his father was then. Find their present ages.
I only got as far as their age now is:
-------------
Let Father be 2x yrs old
Robert is then x yrs old
-------------------------------
Equation:
(x-12) = (1/3)(2x-12)
3x-36 = 2x-12
x = 24 (Robert's age now)
2x = 48 (Father's age now)
==========================
Cheers,
Stan H.



Robert = (1/2) x
Father = x
Twelve years ago:
Father = x-12
Robert = 1/3 (x -12) ???