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If b < 2 and 2x - 3b = 0 which of the following must be true

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If b < 2 and 2x - 3b = 0 which of the following must be true [#permalink]

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If b < 2 and 2x - 3b = 0, which of the following must be true?

A. x > -3
B. x < 2
C. x = 3
D. x < 3
D. x > 3

This topic is locked. Open discussion of the question is at if-b-2-and-2x-3b-0-which-of-the-following-must-be-tru-167460.html
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Re: If b < 2 and 2x - 3b = 0 which of the following must be true [#permalink]

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Re: If b < 2 and 2x - 3b = 0 which of the following must be true [#permalink]

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New post 26 Oct 2010, 10:48
good explanation Bunuel ...txs
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Re: If b < 2 and 2x - 3b = 0 which of the following must be true [#permalink]

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New post 29 Apr 2013, 21:14
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pzazz12 wrote:
If b<2 and 2x-3b=0, which of the following must be true?

A. x>-3
B. x<2
C. x=3
D. x<3
D. x>3



\(Given,\) \(..........\) \(b < 2\) \(\Rightarrow\) \(b = LT2\) \(...........\)

\(&\) \(2x - 3b = 0\)\(.....\) \(Therefore\) \(..........\)\(2x - 3 ( LT2 ) = 0\)

\(Therefore,\) \(2x - LT6 = 0\) \(\Rightarrow\) \(2x = LT6\) \(\Rightarrow\) \(x=\frac{LT6}{2}\)

\(\Rightarrow\) \(x = LT 3\)

\(\Rightarrow\) \(x < 3\) \(Hence,\) \(Answer choice .. D\)
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Re: If b < 2 and 2x - 3b = 0 which of the following must be true [#permalink]

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New post 29 Apr 2013, 22:51
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2x - 3b = 0
Therefore, 2x = 3b
As, b<2
2x < 3(2)
i.e x < 3

Answer : D
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Re: If b < 2 and 2x - 3b = 0 which of the following must be true [#permalink]

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New post 26 Feb 2014, 17:13
As an alternative method, use optimization:

A. if x > -3, then x(100). If x(100) then b is not less than 2. Not true.
C. if x = 3, then x(3). If x(3), then b is 2. Not true.
E. if x > 3, then x(100). If x(100) then b is not less than 2. Not true.

Thus, both x<2 and x<3 are left.

D. If x<3, then x(2.5). If x(2.5), still b<2. Must be true.
(B. if x<2, then 2.5 missing from solution set. Thus, x<2 is not true.)
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Re: If b < 2 and 2x - 3b = 0 which of the following must be true [#permalink]

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New post 10 Feb 2016, 04:26
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Re: If b < 2 and 2x - 3b = 0 which of the following must be true [#permalink]

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New post 11 Feb 2016, 10:06
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Here it is:
b<2
2x-3b=0
2x=3b
2x/3=b
Using both information we have:
2x/3<2
2x<6
x<3

Answer D
Re: If b < 2 and 2x - 3b = 0 which of the following must be true   [#permalink] 11 Feb 2016, 10:06
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If b < 2 and 2x - 3b = 0 which of the following must be true

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