SOLUTION: Mommy Grace is 27yrs old. Her son is 13yrs old. How many years ago was Mommy Grace 3 times as old as her son??
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Question 974047: Mommy Grace is 27yrs old. Her son is 13yrs old. How many years ago was Mommy Grace 3 times as old as her son??
Found 2 solutions by josgarithmetic, larrypizzu :
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
, and if that is too fast and you want to see the steps leading to it, say it. x is how many years ago.
Answer by larrypizzu (5) (Show Source): You can put this solution on YOUR website!
Let the years ago be X
At X years ago Mommy grace will be (27-X)
At X years ago the son will be (13-X)
Note that according to the question, at X years ago age of mommy grace = 3 times age of son
Therefore (27-X) = 3 * (13-X)
27-X = 39-3X
3X-X = 39-27
2X = 12
X= 12/2
X= 6 years ago
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