Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
May 0608:30 AM PDT
-09:30 AM PDT
In Episode 3 of our GMAT Ninja Critical Reasoning series, we tackle Discrepancy, Paradox, and Explain an Oddity questions. You know the feeling: the passage gives you two facts that seem completely contradictory....- May 08
08:00 AM PDT
-08:30 AM PDT
Join the special YouTube live-stream for selecting the winners of GMAT Club MBA Scholarships sponsored by Juno live. Watch who gets these coveted MBA scholarships offered by GMAT Club and Juno.
24 Aug 2017, 23:51
Kudos
Bookmarks
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
15%
(low)
Question Stats:
77% (01:18) correct
23%
(02:18)
wrong
based on 107
sessions
History
Date
Time
Result
Not Attempted Yet
In ∆ ABC above, if DE is parallel to AC, then x =
(A) 70
(B) 50
(C) 40
(D) 30
(E) 20
Attachment:
2017-08-25_1042_001.png [ 16.45 KiB | Viewed 3800 times ]
25 Aug 2017, 00:15
Kudos
Bookmarks
Since DE is parallel to AC, Angle BDE = 60(corresponding angles)
Also, the third angle in the triangle is 180 - (60 + 80) = 40
Angle EDA = 180 - 40 = 140(Angles in a straight line sum to 180)
2y = 40(corresponding angles) => y = 20
In ∆EDA, x + y + 140 = 180
Therefore, x = 180 - 140 - 20 = 20(Option E)
septwibowo
Joined: 27 Dec 2016
Last visit: 05 Nov 2025
Posts: 189
Given Kudos: 285
Concentration: Marketing, Social Entrepreneurship
Schools: Yale '21 HBS '21 Darden '21 Wharton '21
GPA: 3.65
WE:Marketing (Education)
Products:
25 Aug 2017, 11:02
Kudos
Bookmarks
Bunuel
- Because DE parallel with AC, so X must be equal with y --> alternate angles.
- So, if we know Y, we know X (X=Y).
- From triangle ABC = 180-2Y-80-60=0 --> 2Y=40, Y=20.
- Thus X=20.
E.
