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# In the parallelogram shown, what is the value of x? (1) y =

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Director
Joined: 19 Nov 2004
Posts: 563
Location: SF Bay Area, USA
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In the parallelogram shown, what is the value of x? (1) y = [#permalink]  02 Feb 2005, 21:40
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In the parallelogram shown, what is the value of x?
(1) y = 2x
(2) x + z = 120
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Manager
Joined: 11 Jan 2005
Posts: 101
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Kudos [?]: 0 [0], given: 0

D - or either solutions is sufficient. as we are talking about a parrallelogram .

opposite angles are equal
sum of side by side angle = 180
Director
Joined: 07 Jun 2004
Posts: 614
Location: PA
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Kudos [?]: 275 [0], given: 22

d

adjectnt angles are totaled to 180 opp angles are =
Director
Joined: 27 Dec 2004
Posts: 908
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I agree with D. EAch one of them is sufficient to find x.
Director
Joined: 19 Nov 2004
Posts: 563
Location: SF Bay Area, USA
Followers: 3

Kudos [?]: 57 [0], given: 0

I got this one wrong as I did not realize that adjacent angles of Parallellogram is supplimentary. Now I realize you can prove this concept easily as the two sides are parallel to each other.

D is correct!
You guys rock!
Manager
Joined: 24 Jan 2005
Posts: 217
Location: Boston
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Kudos [?]: 5 [0], given: 0

D.
Both are independently suff.
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