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21 Sep 2007, 22:11
Kudos
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N
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
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Need your thoughts on this.
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22 Sep 2007, 01:46
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Hang Tuah
I am interested in the approach to this problem as well. I had this on my GMATPrep and answered E...
22 Sep 2007, 02:54
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Hang Tuah
I'm getting C.
Made the diag and for simplicity marked angle UST as Z, angle RSQ as Y, angle RQS as L, angle SQP as M, angle SUT as A and angle SUP as B.
Whew!!
Now:
x+y+z = 180
(y+z) = 180 - x ...............1
stat 1 : Y = L; doesn't help me. Insuff.
stat 2: Z = A; doesn't help me. insuff.
Stat 1 & 2: Y = L and Z = A
L + M = 180
Since L = Y, Y + M = 180, M = 180 - Y .............. 2
A+B = 180
Since A = Z, Z + B = 180, B = 180 - Z ..............3
Further in quad. PQSU, x + M + angle QPU + B = 360
x = 270 - (M + B)
x = 270 - (180 - Y + 180 - Z) ........ (from 2 & 3)
x = 270 - [360 - (Y + Z)]
x = 270 - [360 - (180 - x)] .........(from 1)
x= 270 - [180 - x] = 90 - x
x = 45 degrees
Hopefully that is right
Whats the OA?
