SOLUTION: Kim is 15. Kim's father is 39. In how many years will Kim's father be exactly twice as old as Kim will be?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Kim is 15. Kim's father is 39. In how many years will Kim's father be exactly twice as old as Kim will be?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 693892: Kim is 15. Kim's father is 39. In how many years will Kim's father be exactly twice as old as Kim will be?
Answer by Stitch(470) About Me  (Show Source):
You can put this solution on YOUR website!
Start by writing the equation: 2%2A%2815+%2B+X%29+=+39+%2B+X
Simplify
30+%2B+2X+=+39+%2B+X
Subtract 30 from both sides
2X+=+9+%2B+X
Subtract X from both sides
highlight%28X+=+9%29
9 years