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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
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GPA: 3.39
If c + d = 200, what is a + b?
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08 Mar 2021, 06:30
08 Mar 2021, 06:30
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If c + d = 200, what is a + b?
A. 100°
B. 110°
C. 120°
D. 150°
E. 160°
Retired Moderator
Joined: 16 Apr 2020
Status:Founder & Quant Trainer
Affiliations: Prepster Education
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Re: If c + d = 200, what is a + b?
[#permalink]
08 Mar 2021, 07:40
08 Mar 2021, 07:40
GeminiHeat wrote:
Attachment:
7.jpg
If c + d = 200, what is a + b?
A. 100°
B. 110°
C. 120°
D. 150°
E. 160°
\(c = d = 100\) ..... [Vertically opposite angles are equal]
In the triangle, \(a + b + x = 180\)
Also, \(x + c = x + d = 180\)
\(x = 80\)
Therefore, \(a + b = 180 - 80 = 100\)
Hence, option A
gmatclubot
Re: If c + d = 200, what is a + b? [#permalink]
08 Mar 2021, 07:40
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