SOLUTION: a girl is twice old as her sister.four years later the product of their age will be 160.find their present age?

Question 297614: a girl is twice old as her sister.four years later the product of their age will be 160.find their present age?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
a girl is twice old as her sister.four years later the product of their age will be 160.find their present age?
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Equations:
g = 2s
(g+4)(s+4)=160
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Sustitute for "g" and solve for "s":
Use the value of "s" to solve for "g".
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Cheers,
Stan H.
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