SOLUTION: If a father is 3 times the age of his son and in 10 years is only double the age of his son... how old is the father and son.... need in an equasion

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: If a father is 3 times the age of his son and in 10 years is only double the age of his son... how old is the father and son.... need in an equasion      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 601331: If a father is 3 times the age of his son and in 10 years is only double the age of his son... how old is the father and son.... need in an equasion
Answer by neatmath(302) About Me  (Show Source):
You can put this solution on YOUR website!

Let F be the father's current age.

Let S be the son's current age.

F=3%2AS and %28F%2B10%29=2%2A%28S%2B10%29

Since we have F by itself, substitute this value for F into the second equation:

%28F%2B10%29=2%2A%28S%2B10%29

%283%2AS%2B10%29=2%2A%28S%2B10%29

3%2AS%2B10=2%2AS%2B20%29

S=10%29

If S=10, then we know

F=3%2AS

F=3%2A10

F=30

Thus, the father is currently 30 years old, and his son is 10 years old.

I hope this helps! :)

*******************************************************

Email Scott King: neatmath@yahoo.com for help with specific problems,

or to inquire about low-cost mathematics tutoring via email or other methods.

Paypal is always accepted for detailed assistance with single problems.

Single problems would range from 50 cents to 5 dollars each, depending on their complexity.