1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    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!

GRE Geometry Problem

  1. Jan 21, 2009 #1
    I've attached an MS paint version of a GRE geometry problem. It's a quantitative comparison question. It asks you to compare two values and say whether one is greater, they're the same, or they're not enough information to say which is greater.

    In the picture I drew everything is in degrees. It's not necessarily to scale.

    As I've said in the picture, the actual answer is that (X-Y) is equal to the value 30. I have no clue how they figured this out though I would've said not enough information to answer.

    Attached Files:

  2. jcsd
  3. Jan 21, 2009 #2


    User Avatar
    Homework Helper

    Notice that 2X+2Y=180 and that 2X+Y+30=180.

    Two equations, two unknows, solve for X and Y, then compute X-Y.
  4. Jan 21, 2009 #3
    Brilliant. thank you.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: GRE Geometry Problem
  1. Geometry problem (Replies: 15)

  2. A problem on geometry. (Replies: 8)

  3. Geometry Problem (Replies: 4)

  4. Geometry problem (Replies: 3)