kidboc1 Junior | Next Rank: 30 Posts View User Profile Posts: 17 Joined: Wed Oct 24, 2007 5:15 pm OG 11 problem solving question number 175 by kidboc1 » Sat Sep 20, 2008 3:21 pm All, Could someone please explain a little better the solution to this problem? Also, how do they determine that the width of the untiled strip is half the difference between x and y? thanks Top Quote