I think i saw this problem somewhere but couldn't find. Can : DS Archive
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# I think i saw this problem somewhere but couldn't find. Can

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I think i saw this problem somewhere but couldn't find. Can [#permalink]

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03 Sep 2009, 09:42
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I think i saw this problem somewhere but couldn't find. Can anybody guide through the solution.
THanks
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Re: GMAT Prep Triangle DS [#permalink]

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03 Sep 2009, 10:13
1. SUFF.

Lets say angle ABD is Y. We know angle BDC is 2x and that angles ABD + BAD = 2x since angle BDA is 180-DBC(2x) and so Y+X = 2x so we can figure out Y =X. With equal angles AD=BD. and in turn BD=BC

2. INSUFF since we might figure out the property like 1 but no known length to work with.

A
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Re: GMAT Prep Triangle DS [#permalink]

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14 Sep 2009, 12:19
shaselai, good explanation. I did the same process and I believe this is the fastest one.
Re: GMAT Prep Triangle DS   [#permalink] 14 Sep 2009, 12:19
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