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Small Math Tip

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Retired Moderator
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Small Math Tip [#permalink] New post 02 May 2010, 00:03
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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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Re: Small Math Tip [#permalink] New post 03 May 2010, 11:16
thanks a lot, I had seen this somewhere.. good reminder!
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Re: Small Math Tip [#permalink] New post 03 May 2010, 14:32
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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Re: Small Math Tip [#permalink] New post 04 May 2010, 22:34
Really helpful RaviChandra !!!
Re: Small Math Tip   [#permalink] 04 May 2010, 22:34
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Small Math Tip

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