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.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

Re: 6 workers should finish a job in 8 days. After 3 days came 4 [#permalink]

Show Tags

19 Jun 2013, 12:17

2

This post received KUDOS

I agree with the math of both of the previous answers, just a question regarding wording: the question asks for "How many days do they need to finish the same job?," which in my mind is the 3 days that the 6 workers use, PLUS the 3 days that the 10 workers use, making the answer D. Thoughts?

Re: 6 workers should finish a job in 8 days. After 3 days came 4 [#permalink]

Show Tags

19 Jun 2013, 15:36

1

This post received KUDOS

jeffcarl wrote:

I agree with the math of both of the previous answers, just a question regarding wording: the question asks for "How many days do they need to finish the same job?," which in my mind is the 3 days that the 6 workers use, PLUS the 3 days that the 10 workers use, making the answer D. Thoughts?

I originally picked D as well, for the same reason.. but after reviewing it again.

"how many days do they need to finish the same project?"

well the project as a whole takes 6 days, but only 3 days left to finish it.

Re: 6 workers should finish a job in 8 days. After 3 days came 4 [#permalink]

Show Tags

20 Jun 2013, 04:06

Expert's post

dave785 wrote:

jeffcarl wrote:

I agree with the math of both of the previous answers, just a question regarding wording: the question asks for "How many days do they need to finish the same job?," which in my mind is the 3 days that the 6 workers use, PLUS the 3 days that the 10 workers use, making the answer D. Thoughts?

I originally picked D as well, for the same reason.. but after reviewing it again.

"how many days do they need to finish the same project?"

well the project as a whole takes 6 days, but only 3 days left to finish it.

Yes, that's correct. The question asks: "how many days do they need to finish the same job?" _________________

Re: 6 workers should finish a job in 8 days. After 3 days came 4 [#permalink]

Show Tags

08 Jun 2015, 04:02

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).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email. _________________

Re: 6 workers should finish a job in 8 days. After 3 days came 4 [#permalink]

Show Tags

20 Jun 2015, 03:50

1

This post received KUDOS

Expert's post

noTh1ng wrote:

Can someone pls review my approach?

6 workers need 8 days for a job. This implies that one worker's rate is 8 / 6 = 4 / 3.

Rate of one worker = 4 / 3 times the new number of workers (6+4 = 10): 4/3 * 10 = 40/3 is the rate for all workers.

Take the reciprocal: 3 / 40 implies that they need 3 weeks for the work of 40.

Is this correct or did i just got lucky? Thanks!

You have made a sever mistake of this topic in the calculation you have shown 6 workers need 8 days for a job. This implies that one worker's rate is 8 / 6 = 4 / 3.

The highlighted part is a flaw in your process. The correct Understanding of the highlighted part is as mentioned below

6 workers need 8 days for a job. This implies that one worker's rate is 8 * 6 = 48 days to finish the same job

The reason for this interpretation is Manpower is Inversely Proportional to the Time.

CONCEPT:i.e. more manpower causes less time to finish the job and Less manpower requires more time to finish the job

Work can be finished in 8 days Remaining Days = 8-3 = 5 days

Now, 6 workers are joined by 4 more workers i.e. the Manpower Increases from 6 to 10 i.e. 5/3 of previous workforce

therefore New time taken should be reciprocal (Inversely Proportional) i.e. 3/5 of previous time i.e. New time = (5)*(3/5) = 3 days

So they Require 3 more days to finish the work. _________________

Classroom Centre Address: GMATinsight 107, 1st Floor, Krishna Mall, Sector-12 (Main market), Dwarka, New Delhi-110075 ______________________________________________________ Please press the if you appreciate this post !!

gmatclubot

Re: 6 workers should finish a job in 8 days. After 3 days came 4
[#permalink]
20 Jun 2015, 03:50

So, my final tally is in. I applied to three b schools in total this season: INSEAD – admitted MIT Sloan – admitted Wharton – waitlisted and dinged No...

A few weeks ago, the following tweet popped up in my timeline. thanks @Uber_Mumbai for showing me what #daylightrobbery means!I know I have a choice not to use it...

“This elective will be most relevant to learn innovative methodologies in digital marketing in a place which is the origin for major marketing companies.” This was the crux...