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01 Aug 2017, 09:26
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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:
15%
(low)
Question Stats:
82% (00:48) correct
18%
(01:53)
wrong
based on 33
sessions
History
Date
Time
Result
Not Attempted Yet
In the figure above, L1 is parallel to L2, then x =
(A) 30
(B) 50
(C) 70
(D) 105
(E) 210
Attachment:
2017-08-01_2025.png [ 7.6 KiB | Viewed 4843 times ]
01 Aug 2017, 09:39
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Let y be the angle show in the attached picture.
We have \(y = 180 - (2x-30) = 210-2x\)
Since L1 is parallel to L2 we get
\(x = y\)
\(x = 210-2x\)
\(3x = 210\)
\(x = 70\)
Hence IMO answer is C
We have \(y = 180 - (2x-30) = 210-2x\)
Since L1 is parallel to L2 we get
\(x = y\)
\(x = 210-2x\)
\(3x = 210\)
\(x = 70\)
Hence IMO answer is C
Attachments
Screen Shot 2017-08-01 at 10.02.53 PM.png [ 15.63 KiB | Viewed 4152 times ]
