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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
Kudus man..............
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
Thank you very much.
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
Thanks! man.
Kudos!
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
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you're welcome :)
p.s i'm a girl

Posted from my mobile device
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
looks good. Yet to solve the questions....but advance Kudos...
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
Kudos,

thank you very much!
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
193 downloads !! Wow :)
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
Hi thank for sharing the file.
I have one question please:
In problem 10 for example, it appears this expression:

Quote:
(40/(x-4))+(40/x) = (50/6) => x=12


what it is the fastest way to solve it?

Thanks!
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
leilak wrote:
you're welcome :)
p.s i'm a girl

Posted from my mobile device

oops! didn't know that :)
I wonder why there aren't many Kudos' as it's been downloaded 317 times but only 9 kudos, looks like GC members are becoming a bit lazy hehe
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
netrix wrote:
Hi thank for sharing the file.
I have one question please:
In problem 10 for example, it appears this expression:

Quote:
(40/(x-4))+(40/x) = (50/6) => x=12


what it is the fastest way to solve it?

Thanks!


So sorry its taken this long, I simply forgot about this thread. If it still helps:

(40/(x-4))+(40/x) = (50/6) => (40x + 40x - 160)*6 = 50x(x-4)

=> 5x^2 - 68x + 96 = 0

if you get the roots out with the formula x = (-b +/- sqrt(b^2-4*a*c)/2*a one of the roots will be 12
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
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Hi leilak, no problem. Thanks for answering.
there are a lot of ugly numbers. An easy approach must be.
For this case of problems, maybe we can plug in numbers with the answer and see what happens
what do you think?
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
of course, you could plug in the answer choices in this equation : (40/(x-4))+(40/x) = (50/6)
I think it may be easier/faster even if you would have to go through all answer choices.
Great idea :)
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
When i click,i get .php extension,is there any problem now?cant download it...
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
Might come handy, Thanks !
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
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KUDOS bud....thanks. the diverse collection of problems were useful.
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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: DOWNLOAD: Work rate problems & answers document [#permalink]
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