1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Introductory Question

  1. Sep 26, 2008 #1
    5 years ago, I was one-sixth age of my brother. In three years my age doubled will match my brother's age. How old is my age.

    I tried setting up with 2 variables

    1/6(I-5) = B-5

    2(I+3) = B+3

    and solved for I then i get a fraction.

    is there any better approach to this?
  2. jcsd
  3. Sep 27, 2008 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    You posted this in the wrong forum. Regardless, while your second equation is correct, you reversed your B and I in the first.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook