*What Area?*

*ABCD is a rectangle. X is on AB and Y is on BC. The area of triangle AXD is 5, the area of triangle BXY is 4 and the area of triangle CYD is 3. Determine the area of triangle DXY.*

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Correct answer were submitted by:

1. Jhay Dela Cruz. Polytechnic University of the Philippines – Taguig

2. Kenny Wong, Jurong Junior College, Singapore

3. Arsh Singh. yourmathguru.com

2sq rt of 21

PUP Taguig