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.
Jul 1609:30 AM EDT
-11:30 AM EDT
Is INSEAD your dream b-school and you're looking for solid prep and application strategies to get there? Check out Barkavi’s end-to-end journey to know how she did! Get insights into the INSEAD admissions process, know what Adcoms look at, and more!
Jul 1611:00 AM EDT
-12:00 PM EDT
Prefer video-based learning? The Target Test Prep OnDemand course is a one-of-a-kind video masterclass featuring 400 hours of lecture-style teaching by Scott Woodbury-Stewart, founder of Target Test Prep and one of the most accomplished GMAT instructors.
Jul 0901:00 PM EDT
-02:00 PM EDT
More Target Test Prep students are earning 100th percentile GMAT scores. Don’t settle for less when the Target Test Prep course gives you everything you need to score high on the GMAT. Start your 5-day free trial today.
Jul 1410:00 AM PDT
-11:59 PM PDT
GMAT Preparation Online - A limited time sale use code: EXPERTSGLOBAL10
Jul 1911:00 AM IST
-01:00 PM IST
Do RC/MSR passages scare you? e-GMAT is conducting a masterclass to help you learn – Learn effective reading strategies Tackle difficult RC & MSR with confidence Excel in timed test environment
Jul 1911:30 AM EDT
-12:30 PM EDT
Struggling to find the right strategies to score a 99 %ile on GMAT Focus? Riya (GMAT 715) boosted her score by 100-points in just 15 days! Discover how the right mentorship, tailored strategies, and an unwavering mindset can transform your GMAT prep.
Manat
Joined: 11 Jun 2018
Last visit: 22 Feb 2020
Posts: 121
Given Kudos: 79
Schools: DeGroote "22 (II) Molson '22 (A)
GMAT 1: 500 Q39 V21
E
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
45%
(medium)
Question Stats:
68% (01:50) correct
32%
(01:44)
wrong
based on 312
sessions
History
Date
Time
Result
Not Attempted Yet
Three machines can finish a work in 4 hrs, 6 hrs and 8 hrs respectively. If all the 3 machines work together to finish the work, then what part of the finished work does the fastest machine do?
A) 1/4
B) 1/6
C) 1/8
D) 13/6
E) 6/13
A) 1/4
B) 1/6
C) 1/8
D) 13/6
E) 6/13
17 Jan 2019, 21:45
Kudos
Bookmarks
Manat
Three machines can finish a work in 4 hrs, 6 hrs and 8 hrs respectively. If all the 3 machines work together to finish the work, then what part of the finished work does the fastest machine do?
A) 1/4
B) 1/6
C) 1/8
D) 13/6
E) 6/13
A) 1/4
B) 1/6
C) 1/8
D) 13/6
E) 6/13
The combined rate of the three machines is 1/4 + 1/6 + 1/8 = 13/24 work/hour. So, working together they can do the job in 24/13 hours. In this time the fastest machine, the one that can do the job in 4 hours, would have done 1/4*24/13 = 6/13 part of the job (job done = rate*time).
Answer: E.
P.S. Please name topics properly. Check rule 3 here: https://gmatclub.com/forum/rules-for-po ... 33935.html Thank you.
General Discussion
KanishkM
Joined: 09 Mar 2018
Last visit: 18 Dec 2021
Posts: 765
Own Kudos:
Given Kudos: 123
Location: India
Schools: DeGroote'21 Desautels '21 NUS '21
17 Jan 2019, 19:16
Kudos
Bookmarks
Manat
Three machines can finish a work in 4 hrs, 6 hrs and 8 hrs respectively. If all the 3 machines work together to finish the work, then what part of the finished work does the fastest machine do?
A) 1/4
B) 1/6
C) 1/8
D) 13/6
E) 6/13
A) 1/4
B) 1/6
C) 1/8
D) 13/6
E) 6/13
Are you getting B ??
= 4 / 24
= 1 / 6
