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Collections of work/rate problem with solutions

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Collections of work/rate problem with solutions  [#permalink]

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New post Updated on: 13 Dec 2011, 09:45
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I re-accumulated the work rate problem with solutions. At http://gmatclub.com/forum/collection-of-work-rate-problems-77092.html#p581805 we got problem and solution not in one file but now we will get so.
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Working Rate question-GMAT Club.doc [89 KiB]
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Collections:-
PSof OG solved by GC members: http://gmatclub.com/forum/collection-ps-with-solution-from-gmatclub-110005.html
DS of OG solved by GC members: http://gmatclub.com/forum/collection-ds-with-solution-from-gmatclub-110004.html
100 GMAT PREP Quantitative collection http://gmatclub.com/forum/gmat-prep-problem-collections-114358.html
Collections of work/rate problems with solutions http://gmatclub.com/forum/collections-of-work-rate-problem-with-solutions-118919.html
Mixture problems in a file with best solutions: http://gmatclub.com/forum/mixture-problems-with-best-and-easy-solutions-all-together-124644.html


Originally posted by Baten80 on 14 Aug 2011, 11:49.
Last edited by Baten80 on 13 Dec 2011, 09:45, edited 1 time in total.
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 18 Sep 2011, 04:22
1
Thanks a ton for the work-rate pbm document..
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 28 Oct 2011, 18:42
Thanks for compiling.
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New post 30 Oct 2011, 21:12
Good one. Kudos for your effort :)
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 21 Nov 2011, 16:54
Baten80 wrote:
I re-accumulated the work rate problem with solutions. At http://gmatclub.com/forum/collection-of-work-rate-problems-77092.html#p581805 we got problem and solution not in one file but now we will get so.
Attachment:
Working Rate question-GMAT Club.doc


Very good post.

There is a mistake thought in the answers. In Question 15 the correct answer is C not A.
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New post 28 Nov 2011, 22:59
thanks 4 putting this 2gthe
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 13 Dec 2011, 10:51
SonyGmat wrote:
Baten80 wrote:
I re-accumulated the work rate problem with solutions. At http://gmatclub.com/forum/collection-of-work-rate-problems-77092.html#p581805 we got problem and solution not in one file but now we will get so.
Attachment:
Working Rate question-GMAT Club.doc


Very good post.

There is a mistake thought in the answers. In Question 15 the correct answer is C not A.


I corrected the mistake(s) in my second post.
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Collections:-
PSof OG solved by GC members: http://gmatclub.com/forum/collection-ps-with-solution-from-gmatclub-110005.html
DS of OG solved by GC members: http://gmatclub.com/forum/collection-ds-with-solution-from-gmatclub-110004.html
100 GMAT PREP Quantitative collection http://gmatclub.com/forum/gmat-prep-problem-collections-114358.html
Collections of work/rate problems with solutions http://gmatclub.com/forum/collections-of-work-rate-problem-with-solutions-118919.html
Mixture problems in a file with best solutions: http://gmatclub.com/forum/mixture-problems-with-best-and-easy-solutions-all-together-124644.html

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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 03 Jan 2012, 04:20
1
Wonderful collection. thanks much -
I wonder if the answer to 2nd might need a change:
I get 3*(W/T+W/T-2) = 6W*(T-1)/(T*(T-2))... that leads to a quadratic
5T*T -34T+ 24 =0... hence T=5.
So answer would be D (2W corresponds to 2T=10 days)
Does that sound ok?
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 03 Jan 2012, 08:30
Me again, sorry -
Also seems that #15 is "C"?
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 03 Jan 2012, 11:10
thanks but the two files have the same questions..am i missing something ?
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 03 Jan 2012, 12:06
sunneysood wrote:
thanks but the two files have the same questions..am i missing something ?


Top file is with latest correction.
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Collections:-
PSof OG solved by GC members: http://gmatclub.com/forum/collection-ps-with-solution-from-gmatclub-110005.html
DS of OG solved by GC members: http://gmatclub.com/forum/collection-ds-with-solution-from-gmatclub-110004.html
100 GMAT PREP Quantitative collection http://gmatclub.com/forum/gmat-prep-problem-collections-114358.html
Collections of work/rate problems with solutions http://gmatclub.com/forum/collections-of-work-rate-problem-with-solutions-118919.html
Mixture problems in a file with best solutions: http://gmatclub.com/forum/mixture-problems-with-best-and-easy-solutions-all-together-124644.html

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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 06 Mar 2012, 19:45
Baten80 wrote:
sunneysood wrote:
thanks but the two files have the same questions..am i missing something ?


Top file is with latest correction.


Why is 15. answer A when it should be C still not corrected?
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 11 Nov 2013, 03:35
thanks for posting! what would you say the difficult level of these problems are?
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 27 Mar 2014, 02:34
Hi,

Both the documents still contain A as solution for Ques 15. Or am i missing the link?
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Re: Collections of work/rate problem with solutions  [#permalink]

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New post 07 Jul 2018, 00:46
rammuaddib wrote:
Wonderful collection. thanks much -
I wonder if the answer to 2nd might need a change:
I get 3*(W/T+W/T-2) = 6W*(T-1)/(T*(T-2))... that leads to a quadratic
5T*T -34T+ 24 =0... hence T=5.
So answer would be D (2W corresponds to 2T=10 days)
Does that sound ok?


Hi,
Im an L here, sorry for late response.

the result of the 2nd degree equation you report is incorrect. The correct result is T=6, thus, the Job of 2W would be done in 6*2=12 days which leads us to the answer E.

Rgds,
Alpa
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Re: Collections of work/rate problem with solutions &nbs [#permalink] 07 Jul 2018, 00:46
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