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Small Math Tip

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BSchool Forum Moderator
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Joined: 02 Oct 2009
Posts: 588

Kudos [?]: 467 [1], given: 412

GMAT 1: 530 Q47 V17
GMAT 2: 710 Q50 V36
WE: Business Development (Telecommunications)
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Small Math Tip [#permalink]

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New post 02 May 2010, 01:03
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To compare two fractions, cross-multiply. The larger product will be on the same side as the larger fraction.

Example:
Given 5/6 vs 6/7
. Cross-multiplying gives 5*7 vs. 6 *6, or 35 vs. 36. Now 36 is larger than 35, so

6/7 is larger than 5/6


Note:Ref-Math bible

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Manager
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Joined: 15 Apr 2010
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Re: Small Math Tip [#permalink]

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New post 03 May 2010, 12:16
thanks a lot, I had seen this somewhere.. good reminder!

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Manager
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Joined: 28 Apr 2010
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Schools: CBS
Re: Small Math Tip [#permalink]

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New post 03 May 2010, 15:32
RaviChandra wrote:
To compare two fractions, cross-multiply. The larger product will be on the same side as the larger fraction.

Example:
Given 5/6 vs 6/7
. Cross-multiplying gives 5*7 vs. 6 *6, or 35 vs. 36. Now 36 is larger than 35, so

6/7 is larger than 5/6


Note:Ref-Math bible

Awesome! Nice tip. Thank you!

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Intern
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B
Joined: 24 Feb 2010
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Location: India
Concentration: Technology, Strategy
Schools: IE Jan"17
GMAT 1: 760 Q51 V43
GPA: 3.44
WE: Research (Computer Software)
Re: Small Math Tip [#permalink]

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New post 04 May 2010, 23:34
Really helpful RaviChandra !!!

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Re: Small Math Tip   [#permalink] 04 May 2010, 23:34
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