Question 492762
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.
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Equations:
f = 2r
3(r-12) = (f-12)
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substitute for "f" and solve for "r":
3r - 36 = 2r-12
r = 24 Robert's age now
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f = 2r
father = 48 yrs old now
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Cheers,
stan H.
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