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x < y

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x < y [#permalink] New post 11 Oct 2017, 09:13
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Question Stats:

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x < y

Quantity A
Quantity B
y - x
x - y


A) Quantity A is greater.
B) Quantity 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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Re: x < y [#permalink] New post 11 Oct 2017, 20:00
Expert's post
Carcass wrote:

We can solve this question using matching operations

Given:
Quantity A: y - x
Quantity B: x - y

Add x to both sides to get:
Quantity A: y
Quantity B: 2x - y

Add y to both sides to get:
Quantity A: 2y
Quantity B: 2x

Divide both sides by 2 to get:
Quantity A: y
Quantity B: x

Since we're told that x < y, the correct answer is A

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Re: x < y   [#permalink] 11 Oct 2017, 20:00
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