ABCD is a parallelogram (see figure above). The ratio of DE to EC is 1:3. AE has a length of 3. If quadrilateral ABCE has an area of 21, what is the area of ABCD?
Sorry, but I couldn't understand the explanation for the question above. How is it possible (3 + 3x) + 3x/2 = 9x + 1.5x = 10.5x?
Book: Geometry - Guide 4 - Chapter 6, Problem Set, Question 2.
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- fschneider13
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- fschneider13
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Re: ABCD is a parallelogram (see figure above). The ratio of DE
Sorry, I guess it's only a sign problem. It should be (3 "x" 3x) instead of (3 "+" 3x).
Tks.
Tks.
- tim
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Re: ABCD is a parallelogram (see figure above). The ratio of DE
No problem. Let us know if you have any further questions. Please note in the future that we have a forum for questions from our strategy guides, and be sure to post there.
Tim Sanders
Manhattan GMAT Instructor
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