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Area of shaded region.

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by farooq » Wed Mar 04, 2009 8:40 am
Data Sufficiency-->PR.

What is the area of shaded region?

1. The area of rectangle ABCD is 54.
2. DE=2EC.
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by bluementor » Wed Mar 04, 2009 8:58 am
The shaded region is half of the entire ABCD rectangular region.

Statement 1) Area of rectangle is given. Area of shaded region can be calcluated (i.e. half of area ABCD). Sufficient.

Statement 2) No info dimensional info. Insufficient.

Choose A.

-BM-
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by marcusking » Wed Mar 04, 2009 11:09 am
bluementor wrote:The shaded region is half of the entire ABCD rectangular region.

Statement 1) Area of rectangle is given. Area of shaded region can be calcluated (i.e. half of area ABCD). Sufficient.

Statement 2) No info dimensional info. Insufficient.

Choose A.

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How do you know the shaded region is half?
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by quocbao » Wed Mar 04, 2009 11:27 am
I got tricked as first time too. Just do the calculation, area of the triangle = AB * AD / 2 = S / 2
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by kamu » Wed Mar 04, 2009 2:08 pm
bluementor wrote:The shaded region is half of the entire ABCD rectangular region.

Statement 1) Area of rectangle is given. Area of shaded region can be calcluated (i.e. half of area ABCD). Sufficient.

Statement 2) No info dimensional info. Insufficient.

Choose A.

-BM-
Neat!
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