SOLUTION: Today, Alan's son is exactly one fifth of Alan's age. In 21 years, Alan will be exactly twice his son’s age.

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: Today, Alan's son is exactly one fifth of Alan's age. In 21 years, Alan will be exactly twice his son’s age.       Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 984683: Today, Alan's son is exactly one fifth of Alan's age.
In 21 years, Alan will be exactly twice his son’s age.


Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
A=Alan's age; S=son's age
.
A=5S
.
A+21=2(S+21) Substitute for A
5S+21=2S+42
3S=21
S=7
A=5S=5(7)=35
Alan is 35 years old and his son is 7 years old.