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12 Jul 2017, 01:53
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D
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89% (00:26) correct
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On line segment AD above, AB = BC = CD. If BD = 36, then AB =
(A) 9
(B) 12
(C) 16
(D) 18
(E) 27
Attachment:
2017-07-12_1252.png [ 3.03 KiB | Viewed 2995 times ]
12 Jul 2017, 02:14
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Bunuel
On line segment AD above, AB = BC = CD. If BD = 36, then AB =
(A) 9
(B) 12
(C) 16
(D) 18
(E) 27
Attachment:
2017-07-12_1252.png
It should be D.
If 36 is split into 3 equal segments and 2 of those segments are equal to 3, then total length can be calculated by
\(x*2/3 = 36\)
\(x = 36*3/2\)
\(x = 54\)
Then, one of the segments would be \(54/3\) or \(18\).
12 Jul 2017, 02:25
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Since BC = CD and BC + CD = BD = 36.
Let BC = CD = x
2x = 36, or x=18.
Therefore, BD = 36.
Both BC and CD are 18.
Now, since AB = BC = CD, we can also say that AB = 18(Option D)
Let BC = CD = x
2x = 36, or x=18.
Therefore, BD = 36.
Both BC and CD are 18.
Now, since AB = BC = CD, we can also say that AB = 18(Option D)
