Question 611431
William's uncle is three times as old as William. In 12 years, his uncle will be twice his age. How old is William now.
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Equation:
u = 3w
u+12 = 2(w+12)
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Substitute for "u" and solve for "w":
3w+12 = 2w+24
w = 12 yrs. (William's age now)
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cheers,
Stan H.