Questions about the world of GMAT Math from other sources and general math related questions.
prutherford18
Course Students
 
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Joined: Mon Aug 24, 2009 4:27 am
 

Round Trip Weighted Average Problem

by prutherford18 Sat Jul 09, 2011 8:43 pm

I remember one of the Manhattan GMAT instructors (I believe it was Horacio Quiroga) describing a trick for round trip (or half the distance) weighted average rate problems. I can't find this anywhere though. Can someone help me?

Thanks,
Patrick
jnelson0612
ManhattanGMAT Staff
 
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Re: Round Trip Weighted Average Problem

by jnelson0612 Thu Jul 14, 2011 12:00 pm

Hi Patrick,
I'm not sure what Horacio's trick is, but let me email him and I will post his response here.
Jamie Nelson
ManhattanGMAT Instructor
jnelson0612
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Posts: 2664
Joined: Fri Feb 05, 2010 10:57 am
 

Re: Round Trip Weighted Average Problem

by jnelson0612 Thu Jul 14, 2011 4:18 pm

Horacio says watch these two videos:

http://www.youtube.com/watch?v=sNE-j4YgICo

http://www.youtube.com/watch?v=5WGxafb7EHw

Please post again if you have more questions!
Jamie Nelson
ManhattanGMAT Instructor