SOLUTION: William is 1/6 as old as his faither but five years older than his sister, Mary. If the sum of all their ages is 51, how old is William?

Question 120495: William is 1/6 as old as his faither but five years older than his sister, Mary. If the sum of all their ages is 51, how old is William?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
William is 1/6 as old as his faither but five years older than his sister, Mary. If the sum of all their ages is 51, how old is William?
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Let William's age be "x"
Father's age is "6x"
Sister's age is "x-5"
EQUATION:
x + 6x + x-5 = 51
8x = 56
x = 7 (William's age is seven)
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Cheers,
Stan H.
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