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In ΔABC above, x =

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Math Expert
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V
Joined: 02 Sep 2009
Posts: 52295
In ΔABC above, x =  [#permalink]

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New post 25 Dec 2018, 07:03
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A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

90% (00:28) correct 10% (00:47) wrong based on 20 sessions

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In ΔABC above, x =  [#permalink]

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New post 25 Dec 2018, 07:19
Bunuel wrote:
Image
In ΔABC above, x =

A. 20
B. 30
C. 40
D. 50
E. 60

Attachment:
2018-12-25_1902.png


Difficulty Level: 550

Sum of interior angles of a triangle = 180

then sum of angles = \(\frac{x}{2}\)+ x + 3x

Let suppose x=2

Then by putting value of x we have 1 + 2 + 6 = 9 => 180/9 = 20

1=20 and x=2 so angle x = 20*2 = 40

Answer = C
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Re: In ΔABC above, x =  [#permalink]

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New post 25 Dec 2018, 08:06
Bunuel wrote:
Image
In ΔABC above, x =

A. 20
B. 30
C. 40
D. 50
E. 60

Attachment:
2018-12-25_1902.png



9x=180*2

x= 40
IMO C
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Re: In ΔABC above, x = &nbs [#permalink] 25 Dec 2018, 08:06
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