SOLUTION: in ten years time a father will be twice as old as his daughter. How old is each now?

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: in ten years time a father will be twice as old as his daughter. How old is each now?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 703276: in ten years time a father will be twice as old as his daughter. How old is each now?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +f+ = father's age now
Let +d+ = Daughter's age now
+f+%2B+10+%7D%7D+=+Father%27s+age+in+10+yrs%0D%0A%7B%7B%7B+d+%2B+10+ = Daughter's age in 10 yrs
----------------------------------
given:
+f+%2B+10+=+2%2A%28+d+%2B+10+%29+
+f+%2B+10+=+2d+%2B+20+
+f+=+2d+%2B+10+
---------------
There is some information missing
about their ages
If the Daughter is 10, the Father is 30
If the Daughter is 20, the father is 50
If the Daughter is 30, the father is 70
etc.