OG 11 problem solving question number 175

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kidboc1: Junior | Next Rank: 30 Posts; 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

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