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Rates and Works Questions with a Headstart - URGENT!

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mandar.sankholkar
 Post subject: Rates and Works Questions with a Headstart - URGENT!
 Post Posted: Thu Feb 02, 2012 6:43 am 
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Course Students


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deleted by moderator JNelson
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jnelson0612
 Post subject: Re: Rates and Works Questions with a Headstart - URGENT!
 Post Posted: Sun Feb 05, 2012 5:03 pm 
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ManhattanGMAT Staff


Posts: 1857
Unfortunately I had to delete your problem because it is from the GMAT Quantatitive Review book which is a banned source on this forum. Please see the forum guidelines: read-before-you-post-general-math-folder-guidelines-t2717.html

To answer your general question, though, I always handle rates and distance or rates and work problems in which two machines/people/trains/whatever run for a different amount of time this way:

1) I let the one who leaves LATER have the time designated as T.
2) I then indicate that the one who left earlier as T+(amount of time the earlier one went before the later one started).

For example:
Julie started walking at noon, and Rita started walking at 3pm.

Rita's time would be T.
Julie's time would be T+3.

I find that this keeps things easier and less complicated. I hope this is helpful!

_________________
Jamie Nelson
ManhattanGMAT Instructor
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