TestMagic

Cosmopolitan · 2006 July 31st, 04:10 PM

I came across two problems that I am not clear about. Any explanations to the OA will be much appreciated.

#1 Are x and y both positive?

1. 2x-2y = 1
2. x/y > 1

OA:

SPOILER: C

#2 Attached

SPOILER: D

Thanks,
Cosmopolitan

manish8109 · 2006 July 31st, 04:53 PM

1) refer to
http://www.urch.com/forums/gmat-data...-positive.html (Are x and y both positive...)

2) Range = 112 - 45 =67

X=56 After selling 20 X=36
Y=94 After Buying 24 Y= 118

New Range = 118 - 36 = 82
Difference in range = 82-67=15 (answer)(D)

Cosmopolitan · 2006 July 31st, 05:53 PM

Manish8109, thanks for the link.

GMAT-HELP · 2006 July 31st, 05:55 PM

Quote:

Originally Posted by Cosmopolitan

Manish8109, thanks for the link.
Shouldn't new range be 118-36=72?

118 - 36 = 82.. I guess, there is a typo in Manish's soln.

manish8109 · 2006 July 31st, 06:55 PM

Corrected it...... It was a typo.
Thanks GH & Cosmopolitan

2006 July 31st, 04:53 PM	#2 (permalink)
manish8109 TestMagic Guru Join Date: Oct 2004 Posts: 1,149	1) refer to http://www.urch.com/forums/gmat-data...-positive.html (Are x and y both positive...) 2) Range = 112 - 45 =67 X=56 After selling 20 X=36 Y=94 After Buying 24 Y= 118 New Range = 118 - 36 = 82 Difference in range = 82-67=15 (answer)(D) Last edited by manish8109 : 2006 July 31st at 06:53 PM. Reason: Automerged post

2006 July 31st, 05:53 PM	#3 (permalink)
Cosmopolitan Eager! Join Date: Feb 2005 Location: Chicago, USA Posts: 34	Manish8109, thanks for the link. Last edited by Cosmopolitan : 2006 July 31st at 07:57 PM.

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2006 July 31st, 06:55 PM	#5 (permalink)
manish8109 TestMagic Guru Join Date: Oct 2004 Posts: 1,149	Corrected it...... It was a typo. Thanks GH & Cosmopolitan

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