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.
Sep 1801:30 AM EDT
-02:30 AM EDT
Learn how Kamakshi achieved a GMAT 675 with an impressive 96th %ile in Data Insights. Discover the unique methods and exam strategies that helped her excel in DI along with other sections for a balanced and high score.
Sep 1712:30 AM EDT
-01:30 AM EDT
Thought your job leaves no time for GMAT prep? After multiple GMAT attempts and a demanding consulting job, Kshitij improved to 695 in under 2 months. Learn the mindset shifts, study strategy, and execution changes that made the breakthrough possible.
Sep 1808:00 PM PDT
-09:00 PM PDT
Video explanations + diagnosis of 10 weakest areas + 150+ short videos + study plan!
Sep 1902:30 AM EDT
-03:30 AM EDT
Tejas studied hard but kept repeating the same mistakes. After 3 attempts at 645, a focused 4-week strategy helped him identify and fix what was holding him back—leading to a 695 with just 12–15 hours of study per week.
07 Sep 2021, 03:56
Kudos
Bookmarks
A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
75%
(hard)
Question Stats:
49% (03:08) correct
51%
(03:04)
wrong
based on 35
sessions
History
Date
Time
Result
Not Attempted Yet
Attachment:
HN Armsterdam.jpg [ 5.78 KiB | Viewed 2477 times ]
A. \(216\) \(cm^2\)
B. \(324\) \(cm^2\)
C. \(208\) \(cm^2\)
D. \(276\) \(cm^2\)
E. \(278\) \(cm^2\)
07 Sep 2021, 12:49
Kudos
Bookmarks
In the picture we see that triangle AKN is similar to triangle CMN.
CN=3*NA -> BM=MC=3*AK
area CMN = \(3^2\) * area AKN (realtion between sides is 3, so relation between areas is \(3^2\))
We also see that triangle BEM is similar to triangle AEK.
area BEM = \(3^2\) * area AEK
We also know that:
area AEN = area AKN + area AEK = 27
area ABC = area CMN + area BEM - area AEN = 9*area AKN + 9*area AEK - area AEN = 9*(area AKN + area AEK) - area AEN = 9*area AEN - area AEN = 8*area AEN = 8*27 = 216
IMO A
CN=3*NA -> BM=MC=3*AK
area CMN = \(3^2\) * area AKN (realtion between sides is 3, so relation between areas is \(3^2\))
We also see that triangle BEM is similar to triangle AEK.
area BEM = \(3^2\) * area AEK
We also know that:
area AEN = area AKN + area AEK = 27
area ABC = area CMN + area BEM - area AEN = 9*area AKN + 9*area AEK - area AEN = 9*(area AKN + area AEK) - area AEN = 9*area AEN - area AEN = 8*area AEN = 8*27 = 216
IMO A
Attachments
gmatclub_22.png [ 31.87 KiB | Viewed 2307 times ]
07 Sep 2021, 13:36
Kudos
Bookmarks
andreagonzalez2k
No where is given ME perpendicular to BC , so how do u assume AKN is similar to CMN (so u cant say AK is perpendicular to EN) , only one angle is same , we are not sure of other two .
Seems some additional info is needed in question.
