SOLUTION: Please help me solve this question: "A father is four times as old as his son. In four years' time their combined age will be 48 years. How old are they now?"

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Please help me solve this question: "A father is four times as old as his son. In four years' time their combined age will be 48 years. How old are they now?"      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 392630: Please help me solve this question:
"A father is four times as old as his son. In four years' time their combined age will be 48 years. How old are they now?"
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A father is four times as old as his son. In four years' time their combined age will be 48 years. How old are they now?"
----
Equations:
f = 4s
(f+4)+(s+4) = 48
-----------------------
Substitute for "f" and solve for "s":
(4s+4)+(s+4) = 48
5s+8 = 48
5s = 40
s = 8 yrs old (son's age now)
--------------
Solve for "f":
f = 4s
f = 4*8 = 32 yrs old (father's age now)
==============================================
Cheers,
Stan H.
=========