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On the number line, what is the distance between the point

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Manager
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On the number line, what is the distance between the point [#permalink] New post 04 Feb 2008, 19:14
On the number line, what is the distance between the point 2x and the point 3x ?

1. On the number line, distance between the point -x and the point x is 16 .
2. On the number line, distance between the point x and the point 3x is 16
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Re: on the number line [#permalink] New post 04 Feb 2008, 23:09
blog wrote:
On the number line, what is the distance between the point 2x and the point 3x ?

1. On the number line, distance between the point -x and the point x is 16 .
2. On the number line, distance between the point x and the point 3x is 16



I got D in either way.

the distance is 8.
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Re: on the number line [#permalink] New post 04 Feb 2008, 23:17
D, agree
1 distance from -x to x is 16 means that distance from x to 0 is 16/2 and x is 8th point_suff
2 distance from x to 3x (3x-x=2x) is 16, if 2x =16=> x = 8_suf
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Re: on the number line [#permalink] New post 05 Feb 2008, 00:03
It is a clear D

We need to find X (3X-2X)

So if we can compute X from either of the statements we are fine.

From 1=> 2X=16 => x=8
From 2 => 2X=16=> X=8

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Re: on the number line [#permalink] New post 05 Feb 2008, 09:41
We need to find difference

3X-2X

We can factor out X

X(3-2)

X(1)

X

So all we need to do is find any statement that gives us X.

Both statements do that nicely.
Re: on the number line   [#permalink] 05 Feb 2008, 09:41
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