Rectangle triangle problem

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September 1997

You are given a rectangle OABC from which you remove three right-angled triangles leaving a fourth triangle OPQ as shown in the diagram below.

Triangle in rectangle

How must you position the points P and Q so that the area of each of the three removed triangles is the same? That is, what are the ratios AP:PB and CQ:QB?



So how do you get the answer??? I'm confused!!

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