SOLUTION: dot and her cousin have a combined age of 24 years. 3years ago, dot was exactly twice as old as her cousin. how old is dot?

Question 467307: dot and her cousin have a combined age of 24 years. 3years ago, dot was exactly twice as old as her cousin. how old is dot?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
dot and her cousin have a combined age of 24 years. 3 years ago, dot was exactly twice as old as her cousin. how old is dot?
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Equations:
d + c = 24
d-3 = 2(c-3)
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Substitute for d and solve for "c":
24-c - 3 = 2c - 6
3c = 27
c = 9 yrs (cousin's age)
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Solve for "d":
d + 9 = 24
d = 15 yrs (dot's age)
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Cheers,
Stan H.
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