NEW HERE? LEARN MORE
closeclose
Last visit was: 27 Apr 2024, 22:50 It is currently 27 Apr 2024, 22:50
Decision Tracker
My Rewards
New posts
New comers' posts

Close
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Go to My Error Log Learn more
Close
Request Expert Reply
Confirm Cancel

Work Rate and Time

SORT BY:
Date
Kudos
avatar
sarthaktuli
Intern
Intern
Joined: 10 Jul 2014
Posts: 4
Own Kudos [?]: [0]
Given Kudos: 0
Send PM
Work Rate and Time [#permalink] New post   05 Jul 2016, 20:28
a can do a piece of work in 12 hours, b in 6 hours, c in 4 hours. a does the work for 2 hours and then b and c join. how much time does it take for a alone to finish the work?

Can some one pls answer this question?
avatar
B
AmoyV
Retired Moderator
Joined: 30 Jul 2013
Status:On a mountain of skulls, in the castle of pain, I sit on a throne of blood.
Posts: 261
Own Kudos [?]: 655 [0]
Given Kudos: 134
Send PM
GMAT ToolKit User Reviews Badge
Re: Work Rate and Time [#permalink] New post   05 Jul 2016, 20:41
sarthaktuli wrote:
a can do a piece of work in 12 hours, b in 6 hours, c in 4 hours. a does the work for 2 hours and then b and c join. how much time does it take for a alone to finish the work?

Can some one pls answer this question?


Could you revise your question? The question "how much time does it take for A alone to finish work" doesn't seem right considering the type of information given. I guess the question should be "how much time does it take for the work to finish?"
avatar
sarthaktuli
Intern
Intern
Joined: 10 Jul 2014
Posts: 4
Own Kudos [?]: [0]
Given Kudos: 0
Send PM
Re: Work Rate and Time [#permalink] New post   05 Jul 2016, 20:46
The question is how much time does it take for a alone to finish the remaining work?
avatar
B
AmoyV
Retired Moderator
Joined: 30 Jul 2013
Status:On a mountain of skulls, in the castle of pain, I sit on a throne of blood.
Posts: 261
Own Kudos [?]: 655 [0]
Given Kudos: 134
Send PM
GMAT ToolKit User Reviews Badge
Work Rate and Time [#permalink] New post   05 Jul 2016, 20:48
sarthaktuli wrote:
The question is how much time does it take for a alone to finish the remaining work?


How much time do B and C work on the work? We can't calculate the answer till we are able to deduct the amount of work B and C did from the total work.
avatar
sarthaktuli
Intern
Intern
Joined: 10 Jul 2014
Posts: 4
Own Kudos [?]: [0]
Given Kudos: 0
Send PM
Re: Work Rate and Time [#permalink] New post   05 Jul 2016, 20:56
How much time do B and C work on the work? We can't calculate the answer till we are able to deduct the amount of work B and C did from the total work.[/quote]

So basically calculate the amount of time a,b and c can do the remaining work in. Then my question is if a alone were to do that remaining work, how much time would it take a then?
avatar
sarthaktuli
Intern
Intern
Joined: 10 Jul 2014
Posts: 4
Own Kudos [?]: [0]
Given Kudos: 0
Send PM
Re: Work Rate and Time [#permalink] New post   05 Jul 2016, 21:02
So basically calculate the amount of time a,b and c can do the remaining work in. Then my question is if a alone were to do that remaining work, how much time would it take a then?
avatar
B
AmoyV
Retired Moderator
Joined: 30 Jul 2013
Status:On a mountain of skulls, in the castle of pain, I sit on a throne of blood.
Posts: 261
Own Kudos [?]: 655 [0]
Given Kudos: 134
Send PM
GMAT ToolKit User Reviews Badge
Re: Work Rate and Time [#permalink] New post   06 Jul 2016, 23:21
We don't need to make any calculations then. The answer is 12 hours.

For more information refer to the below pasted post:

work-word-problems-made-easy-87357.html

Also, I think you would find this book helpful:
gmat-math-book-in-downloadable-pdf-format-130609.html
avatar
B
SlikRick
Intern
Intern
Joined: 23 Apr 2013
Posts: 19
Own Kudos [?]: 8 [0]
Given Kudos: 3
Location: United States
Schools: Kellogg '20 (M$) CBS '20 (A$)
GMAT 1: 710 Q49 V37
GMAT 2: 760 Q49 V44
GPA: 3.7
Send PM
Reviews Badge
Re: Work Rate and Time [#permalink] New post   08 Jul 2016, 02:04
Are you sure the question isn't asking something along the lines of "A works for two hours. Then B and C join. How long does it take A, B, AND C to complete the job?"
GMAT Club Bot
gmatclubot
Re: Work Rate and Time [#permalink]
08 Jul 2016, 02:04

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne
Main navigation
GMAT Resources
Partners
MBA Resources
www.gmac.com|www.mba.com | | GMAT Club Rules | Terms and Conditions