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# DS - Lines

Author Message
Senior Manager
Joined: 05 Oct 2008
Posts: 258

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03 Feb 2009, 22:37
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

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Attachment:

DS_Lines_C.JPG [ 15.71 KiB | Viewed 1078 times ]

--== Message from GMAT Club Team ==--

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SVP
Joined: 07 Nov 2007
Posts: 1741
Location: New York

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03 Feb 2009, 22:43
not sufficient

(2) multiple solutions see below explanation
not sufficient

Graphical approach:
See below for graphical approach.
s and t are positive-- in this case s=-r

s and t are -ve ... inthis case s-r (zero is not mid point)

Mathematical approach:

When we talk about distance.. don't forget Mod..

|t-r|=|t+s|
--> multiple solutions

when you combine (1) and (2)
t and s are +ve .
r=-s

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If you would like to discuss this question please re-post it in the respective forum. Thank you!

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Re: DS - Lines   [#permalink] 03 Feb 2009, 22:43
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