Forum Home > GMAT > Quantitative > Problem Solving (PS)
Events & Promotions
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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Jun 0811:00 AM IST
-01:00 PM IST
Attend this session to learn how to Deconstruct arguments, Pre-Think Author’s Assumptions, and apply Negation Test.
Jun 0712:00 PM PDT
-01:00 PM PDT
In this GMAT experience talk show, we talk to Tavishi, a young MBA aspirant from India who recently scored 725 in her latest GMAT Focus exam. It’s a 99.9 percentile score on the new GMAT Focus edition and she achieved this feat in her first GMAT attempt.- Jun 09
11:00 AM IST
-01:00 PM IST
Attend this session to evaluate your current skill level, learn process skills, and solve through tough Arithmetic questions - Jun 11
05:40 AM PDT
-12:00 PM PDT
Register for the GMAT Club Virtual MBA Spotlight fair, the biggest MBA fair of the year. You will have a chance to hear Admissions directors from almost every Top 20 program speak, network with peers, and more. 
Jun 1111:00 AM PDT
-12:00 PM PDT
Magoosh students get into top business schools like MIT Sloan, HBS, Stanford GSB, Wharton and more! See why over 6 million students trust us for exam prep.
Jun 1310:00 AM EDT
-10:30 AM EDT
Level up your Chicago Booth MBA application! Sia Admissions will be LIVE on June 13th for expert guidance on crafting your application that resonates with admission committees. Learn core themes, personal branding tips, and strategies and more.
Jun 1311:00 AM EDT
-12:00 PM EDT
TTP has received over 700 reviews on GMAT Club! This incredible milestone is a testament to our dedication to helping students score high on the GMAT for over a decade.
Jun 1412:00 PM EDT
-01:00 PM EDT
Have you ever wondered how to score a PERFECT 805 on the GMAT Focus Edition? Meet Julia, a banking professional who used the Target Test Prep course to achieve this incredible feat. Julia's story is nothing short of an inspiration.
Working together, Joe and Joanne finish a job in 2 hours. How long
[#permalink]
03 Nov 2023, 01:30
03 Nov 2023, 01:30
1
Kudos
Expert Reply
Show timer
00:00
A
B
C
D
E
Difficulty:
25%
(medium)
Question Stats:
74% (01:23) correct
26%
(01:20)
wrong
based on 65
sessions
Working together, Joe and Joanne finish a job in 2 hours. How long will it take Jeremy and Joe to finish the job?
(1) Working alone and without breaks Joe takes 5 hours to finish the job, which is 400% as long as the time it takes Jeremy to finish the job.
(2) Working alone and without breaks Joanne takes 10 hours to finish 3 times the job.
(1) Working alone and without breaks Joe takes 5 hours to finish the job, which is 400% as long as the time it takes Jeremy to finish the job.
(2) Working alone and without breaks Joanne takes 10 hours to finish 3 times the job.
Re: Working together, Joe and Joanne finish a job in 2 hours. How long
[#permalink]
04 Nov 2023, 10:52
04 Nov 2023, 10:52
2
Kudos
Assume that Joe, Joanne, and Jeremy spend A, B, and C hours to complete the job, respectively.
Working together, Joe and Joanne finish a job in 2 hours. --> 1/A + 1/B = 1/2 (*)
How long will it take Jeremy and Joe to finish the job? --> We want to know 1/C + 1/A
(1) --> A = 5, C = 5/400% --> Now A and C are known. --> 1/C + 1/A is known. --> Sufficient.
(2) --> B = 10/3 --> A is known from (*) . Yet, C is still unknown. --> Insufficient.
Thus, A.
Working together, Joe and Joanne finish a job in 2 hours. --> 1/A + 1/B = 1/2 (*)
How long will it take Jeremy and Joe to finish the job? --> We want to know 1/C + 1/A
(1) --> A = 5, C = 5/400% --> Now A and C are known. --> 1/C + 1/A is known. --> Sufficient.
(2) --> B = 10/3 --> A is known from (*) . Yet, C is still unknown. --> Insufficient.
Thus, A.
Senior Manager
Joined: 01 May 2022
Posts: 413
Given Kudos: 102
Location: India
WE:Engineering (Computer Software)
Re: Working together, Joe and Joanne finish a job in 2 hours. How long
[#permalink]
04 Nov 2023, 11:02
04 Nov 2023, 11:02
1
Kudos
Bunuel wrote:
Working together, Joe and Joanne finish a job in 2 hours. How long will it take Jeremy and Joe to finish the job?
(1) Working alone and without breaks Joe takes 5 hours to finish the job, which is 400% as long as the time it takes Jeremy to finish the job.
(2) Working alone and without breaks Joanne takes 10 hours to finish 3 times the job.
(1) Working alone and without breaks Joe takes 5 hours to finish the job, which is 400% as long as the time it takes Jeremy to finish the job.
(2) Working alone and without breaks Joanne takes 10 hours to finish 3 times the job.
OA is A
Posted from my mobile device
Attachments
1000058066.jpg [ 2.68 MiB | Viewed 753 times ]
