SOLUTION: i am 10 years old my father is 2 times older than my brother my mom is 10 years younger and my brother is 20 how old in my mother

Algebra ->  Customizable Word Problem Solvers  -> Age -> SOLUTION: i am 10 years old my father is 2 times older than my brother my mom is 10 years younger and my brother is 20 how old in my mother      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 428072: i am 10 years old my father is 2 times older than my brother my mom is 10 years younger and my brother is 20 how old in my mother
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
I am 10 years old.
I = 10
:
My father is 2 times older than my brother.
f = 2b
:
My mom is 10 years younger and my brother is 20.
m = f - 10
b = 20
;
How old in my mother?
f = 2(20)
f = 40
and
m = 40 - 10
m = 30
:
It must be a half-brother, if mom is 30