SOLUTION: The age of the mother is thrice that of her daughter. After twelve years the age of the mother will be twice her daughter's. The age of the daughter today is.

Question 934708: The age of the mother is thrice that of her daughter. After twelve years the age of the mother will be twice her daughter's. The age of the daughter today is.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = mother age
y = daughter age
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x = 3y
x + 12 = 2(y + 12)
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put the system of linear equations into standard form
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x - 3y = 0
x + 12 = 2y + 24
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x - 3y = 0
x - 2y = 12
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x = mother age = 36
y = daughter age = 12
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