SOLUTION: Aga was 9 yrs. old. When his sister was born. Now, he is 6 yrs less than twice his sister's age. What are their present ages?

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Question 695124: Aga was 9 yrs. old. When his sister was born. Now, he is 6 yrs less than twice his sister's age. What are their present ages?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Aga was 9 yrs. old. When his sister was born. Now, he is 6 yrs less than twice his sister's age. What are their present ages?
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Equations:
a-s = 9
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a = 2s-6
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Substitute for "a" and solve for "s":
9+s = 2s-6
s = 15 yrs: (sister's age now)
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Solve for a using a = s+9
a = 15+9 = 24yrs (Aga's age now)
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Cheers,
Stan H.
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