SOLUTION: Jodie is now 28 years old and Dave is 10 years old. In how many years will Jody be twice as old as Dave? I think this is solved by a simultaneous equation, but don't quite know h

Question 732669: Jodie is now 28 years old and Dave is 10 years old. In how many years will Jody be twice as old as Dave? I think this is solved by a simultaneous equation, but don't quite know how to set it up. I have drawn a simple two row 9 column table and worked it out to be 8 years but I know it could be done quicker with a simultaneous equation.
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
That will happen in years. Let's find .
In years Jodie will be years old.
At that time Dave will be years old.
Jodie will be be twice as old as Dave, so
--> --> --> -->
So in years Jodie will be twice as old as Dave.

Verification:
In 8 years Dave will be years old and Jodie will be years old, which is twice as old as years old.
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