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GMAT QuantitativeReview11th Question

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by aarok » Thu Jun 11, 2009 2:01 pm
The answer to this question is listed on page 193 in the GMAT QuantitativeReview11th edition. According to the authors the answer is A.
I, however, cannot understand why. If angle BAC=x then the answer is A, but the information seems to be missing.

What is your opinion? Can somebody explain it to me please?

Thanks!!!
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Source: — Data Sufficiency |
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by tohellandback » Thu Jun 11, 2009 6:09 pm
this question has been discussed multiple times

https://www.beatthegmat.com/gmatprep-pra ... t1615.html

this is just one link
The powers of two are bloody impolite!!
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