SOLUTION: I am 32, my sister is 18. How old will I be when I am 3x's her age?

Question 179262: I am 32, my sister is 18. How old will I be when I am 3x's her age?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
I am 32, my sister is 18. How old will I be when I am 3x's her age?
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Let the year difference be "x" yrs.
Equation:
my age then = 3(sister's age then)
(32+x) = 3(18+x)
32+x = 54 + 3x
2x = -22
x = -11
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I will be 32-11 = 21
Sister will be 18-11 = 7
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Cheers,
Stan H.
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