Tough Geometry DS Question

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Paras_0111: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Wed Jun 22, 2016 3:23 am; Thanked: 1 times

by Paras_0111 » Wed Oct 12, 2016 5:34 am

[url=https://postimg.cc/image/atxqeqvyn/]

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Source: Beat The GMAT — Data Sufficiency | Wed Oct 12, 2016 5:34 am

DavidG@VeritasPrep: Legendary Member; Posts: 2663; Joined: Wed Jan 14, 2015 8:25 amFollowed by: 128 members; Location: Boston, MA; Thanked: 1153 times; GMAT Score:770

by DavidG@VeritasPrep » Wed Oct 12, 2016 5:38 am

Paras_0111 wrote:[url=https://postimg.cc/image/atxqeqvyn/][/

Is it possible to repost this with a larger image?

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Paras_0111: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Wed Jun 22, 2016 3:23 am; Thanked: 1 times

by Paras_0111 » Wed Oct 12, 2016 5:46 am

I have attached the image. Thank you!

Attachments

: Attaching the image. Thank you!

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Paras_0111: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Wed Jun 22, 2016 3:23 am; Thanked: 1 times

by Paras_0111 » Wed Oct 12, 2016 6:11 am

Hi David - I have posted the image. It would be great if you could help with it. Thanks in advance!

Regards,
Paras

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Nikitaojha: Newbie | Next Rank: 10 Posts; Posts: 2; Joined: Tue Aug 18, 2015 8:58 am; Thanked: 2 times

by Nikitaojha » Wed Oct 12, 2016 7:51 am

This question is related to parallel lines.

(1) AD || BC - This can tell us that Angle CAD = Angle BCA. (AC intersects the two parallel lines). However, this will not give us the exact degree measure of Angle CAD.

INSUFFICIENT

(2) Angle CAD = 35 degrees. With this information, we can't get the degree value for BCA.

INSUFFICIENT

(1) and (2) If AC is the intersection and AD||BC, and angle CAD= 35.. that makes angle BCA = 35 degrees.

Answer is Option C

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Paras_0111: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Wed Jun 22, 2016 3:23 am; Thanked: 1 times

by Paras_0111 » Wed Oct 12, 2016 7:52 am

Thank you Nikita! The simple rule slipped my mind..

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