Question 1000728: Sipho is 6 years older than betty.in 3 years'time sipho will be twice as old as betty.how old is sipho now? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Sipho is 6 years older than betty.in 3 years'time sipho will be twice as old as betty.how old is sipho now?
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Equations:
s = b + 6
s+3 = 2(b+3)
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Substitute for "s" and solve for "b"::
b+6 + 3 = 2b+6
b = 3 yrs (betty's age now)
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s = b + 6
s = 9 yrs (Sipho's age now)
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Cheers,
Stan H.
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