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djhouse81
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Yes, another GMAT Prep PS 19 Jun 2007, 18:06
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Please see attached



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Yes, another GMAT Prep PS 19 Jun 2007, 18:07
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OA is C
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bkk145
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Yes, another GMAT Prep PS 19 Jun 2007, 18:40
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djhouse81
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It's hard to explain without a picture. I worked it out, you get 7 equations with 7 unknowns...
Set:
<QRS = a
<RQS = <RSQ = b
<SQP = c
<SUP = d
<TSU = <SUT = e
<STU = f
You get the following:
(1) a+b+b = 180
(2) c+x+d+90 = 360
(3) f+e+e=180
(4) b+x+e=180
(5) b+c=180
(6) d+e=180
(7) a+90+f=180

7 equations, 7 unknowns....
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iamba
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Yes, another GMAT Prep PS 19 Jun 2007, 23:11
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Its actually quite simple. I have attached a doc with the picture showing different angles

1) Implies angles RQS and RSQ are equal
2) Impleie TSU and TUS are equal

Sum of angles of PQSU should be 360

So, 90 + x + 180-b + 180-a = 360
implies x-a-b = -90

And x+a+b = 180 because RST is a straight line
hence 2x=90 or x=45

Answer C
Attachments

gmat_prep_q1_595.doc [27 KiB]
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djhouse81
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Yes, another GMAT Prep PS 20 Jun 2007, 10:32
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OA is C. I post the answers right after I post the question, but in white font so your eyes don't uncontrollably stray and look at the answer before you see the question.
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djhouse81
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Thanks for the explanation. I understand now. I'm starting to see a pattern with my mistakes, which is good.



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