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02 Jul 2015, 01:56
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
70% (02:21) correct
30%
(02:47)
wrong
based on 521
sessions
History
Date
Time
Result
Not Attempted Yet
What is x in the diagram below?
A. 12/7
B. 24/7
C. 36/7
D. 48/7
E. 72/7
2015-07-02_1254.png [ 9.84 KiB | Viewed 29476 times ]
A. 12/7
B. 24/7
C. 36/7
D. 48/7
E. 72/7
Attachment:
2015-07-02_1254.png [ 9.84 KiB | Viewed 29476 times ]
25 Jan 2018, 20:33
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frrcattack
What is x in the diagram below?
A. 12/7
B. 24/7
C. 36/7
D. 48/7
E. 72/7
Hi Bunuel,
I am confused about what the 7 is referring to. Is 7 the solid line? If so, how are we using that 7 as a base of the imaginary triangle drawn by the dotted lines? Also, why are we able to reference the area of 18 from the triangle with solid lines to help us determine the base of the dotted line triangle? This one is driving me crazy. Thank you in advance for your reply!
A. 12/7
B. 24/7
C. 36/7
D. 48/7
E. 72/7
Hi Bunuel,
I am confused about what the 7 is referring to. Is 7 the solid line? If so, how are we using that 7 as a base of the imaginary triangle drawn by the dotted lines? Also, why are we able to reference the area of 18 from the triangle with solid lines to help us determine the base of the dotted line triangle? This one is driving me crazy. Thank you in advance for your reply!
CE = 3;
AC = 7;
AB = 12;
BD = x.
Consider AB as a base of triangle ABC. The are = 1/2*base*height = 1/2*AB*CE = 1/2*12*3 = 18.
Now, consider AC as a base of the SAME triangle ABC. In this case the height is BD (perpendicular from B to extended base AC) The are = 1/2*base*height = 1/2*AC*BD = 1/2*7*x = 18 --> 36/7.
Answer: C.
Hope it's clear.
Attachment:
Untitled.png [ 11.59 KiB | Viewed 23847 times ]
NickHalden
Joined: 15 Feb 2012
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Concentration: Marketing, Strategy
Schools: NUS '17 Rotman '17 LBS '17 Ross '17 Duke '17 Wharton '17 Kellogg '17 Tepper '17 Tuck '17 Anderson '17 Darden '17 Kenan-Flagler '17 McCombs '17 Jones '17 Kelley '18 (S)
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02 Jul 2015, 02:33
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Bookmarks
Area of triangle = base*height
In the given figure,
If we consider the side with 12 units as base & height as the one with 3 units, area = 12*3 -------------- (1)
If we consider the side with 7 units as base & height as the one with x units, area = 7*x ----------------(2)
From 1 & 2,
12*3 = 7*x
x = 36/7
Hence C !!
In the given figure,
If we consider the side with 12 units as base & height as the one with 3 units, area = 12*3 -------------- (1)
If we consider the side with 7 units as base & height as the one with x units, area = 7*x ----------------(2)
From 1 & 2,
12*3 = 7*x
x = 36/7
Hence C !!
