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DS: Finding Angles

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Manager
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Joined: 05 Aug 2008
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Schools: McCombs Class of 2012
DS: Finding Angles [#permalink]

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New post 24 Dec 2008, 15:23
00:00
A
B
C
D
E

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Attachment:
Q1.JPG
Q1.JPG [ 45.95 KiB | Viewed 940 times ]

Kudos [?]: 48 [0], given: 0

SVP
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Joined: 07 Nov 2007
Posts: 1790

Kudos [?]: 1104 [0], given: 5

Location: New York
Re: DS: Finding Angles [#permalink]

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New post 24 Dec 2008, 23:04
smarinov wrote:
Attachment:
Q1.JPG


assume
Angle PQR=x
Angle QPR=z
Angle PRQ=y

statement 1)
z=30
x+y=150

Question Angle PRS - Angle PQR = (180-y)-x = 180- (x+y) = 180-150
=30

Sufficient
Statment 2)
same as above
suffcient


D
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Manager
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Re: DS: Finding Angles [#permalink]

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New post 25 Dec 2008, 09:40
Statement 1
-------------

PRS = QPR + PQR

PRS - PQR = QPR = 30 Sufficient

Statement 2
-------------

PQR + PRQ = 150 =>
QPR = 30, because sum of angle of a triangel is 180

Hence again SUFFICIENT !

Ans is D.

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Re: DS: Finding Angles   [#permalink] 25 Dec 2008, 09:40
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DS: Finding Angles

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