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.
Apr 2711:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors
Apr 2610:00 AM EDT
-11:00 AM EDT
The Target Test Prep course represents a quantum leap forward in GMAT preparation, a radical reinterpretation of the way that students should study. Try before you buy with a 5-day, full-access trial of the course for FREE!
Apr 2808:00 AM PDT
-11:00 AM PDT
Whether you are just beginning your MBA journey or fine-tuning your path to a 700+ score, GMAT Day is designed to give you a competitive edge.
03 Sep 2018, 03:50
Kudos
Bookmarks
C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
65%
(hard)
Question Stats:
43% (01:32) correct
57%
(01:51)
wrong
based on 30
sessions
History
Date
Time
Result
Not Attempted Yet
If angle BDC is approximately 65°, what is the approximate value of x?
A. \(20\)
B. \(30\)
C. \(40\)
D. \(50\)
E. \(60\)
03 Sep 2018, 03:50
Kudos
Bookmarks
Official Solution:
If angle BDC is approximately 65°, what is the approximate value of x?
A. \(20\)
B. \(30\)
C. \(40\)
D. \(50\)
E. \(60\)
We’ll go for PRECISE because we have all the information we need to solve the question.
Adding AD and DC together, we see that triangle ABC is made up of lines of lengths 3, 4, 5 – a Pythagorean triplet! This means ∠B = 90°. Next, since BC = DC, we know that ∠CDB = ∠BDC = 65°. This makes ∠C = 180 – 65 – 65 = 50°. Now that we have two of the triangle’s angles, we can see that ∠A = 180 – 90 – 50 = 40°.
Answer: C
If angle BDC is approximately 65°, what is the approximate value of x?
A. \(20\)
B. \(30\)
C. \(40\)
D. \(50\)
E. \(60\)
We’ll go for PRECISE because we have all the information we need to solve the question.
Adding AD and DC together, we see that triangle ABC is made up of lines of lengths 3, 4, 5 – a Pythagorean triplet! This means ∠B = 90°. Next, since BC = DC, we know that ∠CDB = ∠BDC = 65°. This makes ∠C = 180 – 65 – 65 = 50°. Now that we have two of the triangle’s angles, we can see that ∠A = 180 – 90 – 50 = 40°.
Answer: C
This is a very poor quality question.
