SOLUTION: vivienne is 2 times old as her daughter. eight years later, the sum of their ages will be 79 years old. find the present age of vivienne

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Question 1138455: vivienne is 2 times old as her daughter. eight years later, the sum of their ages will be 79 years old. find the present age of vivienne
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
d, daughter
2d, Vivienne

d%2B8%2B%282d%2B8%29=79
-
3d=79-16
d=21
Vivienne is therefore 42.