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a ≠ b

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GMAT Club Legend
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Joined: 07 Jun 2014
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GRE 1: Q167 V156
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a ≠ b [#permalink] New post 23 Jun 2018, 12:28
Expert's post
00:00

Question Stats:

69% (00:39) correct 30% (00:43) wrong based on 26 sessions
\(a \neq b\)

Quantity A
Quantity B
\(\frac{a-b}{b-a}\)
1


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Director
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Re: a ≠ b [#permalink] New post 26 Jun 2018, 07:51
sandy wrote:
\(a \neq b\)

Quantity A
Quantity B
\(\frac{a-b}{b-a}\)
1


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.



From the statement; statement B > Statement 1

If we put any values in Statement 1 it will always result = -1 which is less than statement 2
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Intern
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Re: a ≠ b [#permalink] New post 27 Jun 2018, 17:01
(a-b)/(b-a)=(a-b)/-(a-b)=-1<1 -> B
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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4722
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1630 [0], given: 390

CAT Tests
Re: a ≠ b [#permalink] New post 18 Jul 2018, 07:38
Expert's post
Explanation

Plug in any two unequal values for a and b, and Quantity A will always be equal to –1. This is because a negative sign can be factored out of the top or bottom of the fraction to show that the top and bottom are the same, except for their signs:

\(\frac{a-b}{b-b}=\frac{a-b}{-(a-b)}=-1\)
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Re: a ≠ b   [#permalink] 18 Jul 2018, 07:38
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