Please explain this OG 12-223

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by Anju@Gurome » Wed Apr 17, 2013 6:33 pm
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Backup Methods : General guide on plugging, estimation etc.
Wavy Curve Method : Solving complex inequalities in a matter of seconds.

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by GMATGuruNY » Wed Apr 17, 2013 6:55 pm
Check the second half of my post here:

https://www.beatthegmat.com/ratios-fract ... 15365.html
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I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
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by [email protected] » Wed Apr 17, 2013 7:06 pm
Thanks Mitch for clearing this new concept!