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They have a triangle ABC, And a point D on AC. BDC = BCD =

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Director
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They have a triangle ABC, And a point D on AC. BDC = BCD = [#permalink] New post 14 Apr 2006, 18:15
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A
B
C
D
E

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They have a triangle ABC, And a point D on AC. BDC = BCD = 2xdegree.
What is BC?

1) AD = 6
2) x = 36

They say AD = 6 is sufficient to know the length of BC.
I dont think so.. We know BD = BC, because angles are equal.. but I dont know how do they conclude AD = BD from this? Please help..

Has anyone else seen this?
Director
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 [#permalink] New post 14 Apr 2006, 18:22
I am attaching the diagram.. a word file xplaining it further..
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Director
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 [#permalink] New post 14 Apr 2006, 21:00
anyone any insight?

anyone who has solved this problem before from OG?
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Re: OG Quant Review: DS, Chapter 5.5, Problem 117 wrong? [#permalink] New post 14 Apr 2006, 22:17
willget800 wrote:
Has anyone see this happen?

I think their answer is wrong..

They have a triangle ABC, And a point D on AC. BDC = BCD = 2xdegree.
What is BC?

1) AD = 6
2) x = 36

They say AD = 6 is sufficient to know the length of BC.
I dont think so.. We know BD = BC, because angles are equal.. but I dont know how do they conclude AD = BD from this? Please help..

Has anyone else seen this?


Something is defenitely missing. There's no way we can conclude AD=BD..
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 [#permalink] New post 15 Apr 2006, 09:32
hey i have a friend who is a teacher for Kaplan ... he is the gmat MATH god lol ... il ask what he thinks and let you guys know ... from first glance i agree with you but im not sure im not that strong at the super tricky DS problems
  [#permalink] 15 Apr 2006, 09:32
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They have a triangle ABC, And a point D on AC. BDC = BCD =

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