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# If m and r are two numbers on a number line. What is the

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Manager
Joined: 22 May 2007
Posts: 218

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If m and r are two numbers on a number line. What is the [#permalink]

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16 Aug 2008, 21:08
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If m and r are two numbers on a number line. What is the value of r?

1) The distance between r and 0 is three times the distance between m and 0
2) 12 is halfway between m and r

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Director
Joined: 27 May 2008
Posts: 541

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16 Aug 2008, 21:21
aaron22197 wrote:
If m and r are two numbers on a number line. What is the value of r?

1) The distance between r and 0 is three times the distance between m and 0
2) 12 is halfway between m and r

statement 1 : |r| = 3*|m|
r = 3m OR r = -3m
not suff

statement 2 :
|r-12| = |m-12|
we know r and m are not equal so
r-12 = 12-m
r+m = 24
not suff

combine
when r = 3m
m = 6, and r = 18

when r = -3m
m=-12, and r = 36

not suff E

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Re: GMATPREP-Numberline   [#permalink] 16 Aug 2008, 21:21
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