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08 May 2016, 19:12
Kudos
Bookmarks
E
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:
83% (00:59) correct
17%
(00:51)
wrong
based on 71
sessions
History
Date
Time
Result
Not Attempted Yet
If 2 line segments AB and CD is collinear, what is the sum of AB and CD?
A. 5
B. 6
C. 8
D. 9
E. 10
* A solution will be posted in two days.
A. 5
B. 6
C. 8
D. 9
E. 10
* A solution will be posted in two days.
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08 May 2016, 19:43
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MathRevolution
Both ABC and ADE are right triangle ..
so HYP AD of triangle ADE = \(\sqrt{12^2+9^2} = 15\)..
and BC is \(\sqrt{3^2+4^2} = 5\)..
hence AB + CD = 15-5=10
E
10 May 2016, 18:54
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According to the Pythagoras theorem, we get sides of a triangle as 9:12:15. Then this can be reduced to 3:4:5. Hence, 15-5=10, making E as the correct answer.
