GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 19 Mar 2019, 14:47

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.

Close

Request Expert Reply

Confirm Cancel

If Anil can finish a job in 4 hours and Gustavo can finish the same jo

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:

Hide Tags

 
Senior RC Moderator
User avatar
V
Status: Preparing GMAT
Joined: 02 Nov 2016
Posts: 2420
Location: Pakistan
GPA: 3.39
If Anil can finish a job in 4 hours and Gustavo can finish the same jo  [#permalink]

Show Tags

New post 04 Mar 2019, 14:27
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

86% (00:56) correct 14% (00:53) wrong based on 21 sessions

HideShow timer Statistics

If Anil can finish a job in 4 hours and Gustavo can finish the same job in 6 hours, how long would it take them, working together at their respective rates, to complete the job?

A. 1 hour, 50 minutes
B. 2 hours, 10 minutes
C. 2 hours, 24 minutes
D. 3 hours, 45 minutes
E. 4 hours, 30 minutes

_________________

New Project RC Butler 2019 - Practice 2 RC Passages Everyday
Final days of the GMAT Exam? => All GMAT Flashcards.
This Post Helps = Press +1 Kudos
Best of Luck on the GMAT!!

Most Helpful Expert Reply
e-GMAT Representative
User avatar
D
Joined: 04 Jan 2015
Posts: 2709
Re: If Anil can finish a job in 4 hours and Gustavo can finish the same jo  [#permalink]

Show Tags

New post 04 Mar 2019, 23:26
1

Solution



Given:
    • Anil can finish a job in 4 hours.
    • Gustavo can finish the same job in 6 hours.

To find:
    • The time to finish the job when both works together.

Approach and Working:
Let us assume the total job is 12 units (LCM of 4 and 6 is 12)

    • Anil can do 12 units of work in 4 hours, hence in 1-hour Anil can do \(\frac{12}{4} = 3\) units
    • Gustavo can do 12 units of work in 6 hours, hence in 1-hour Gustavo can do \(\frac{12}{6} = 2\) units

Together they can do (3 + 2) = 5 units of work in 1 hour.

Therefore, to complete the work, they will take = \(\frac{12}{5}\) hours = 2 hours 24 minutes.

Hence, the correct answer is option C.

Answer: C

Image

_________________








Register for free sessions
Number Properties:- Get 5 free video lessons, 50 practice questions | Algebra:-Get 4 free video lessons, 40 practice questions
Quant Workshop:- Get 100 practice questions | Free Strategy Session:- Key strategy to score 760

Success Stories
Q38 to Q50- Interview call form Wharton | Q35 to Q50 | More Success Stories

Ace GMAT
Articles and Questions to reach Q51 | Question of the week | Tips From V40+ Scorers | V27 to V42:- GMAT 770 | Guide to Get into ISB-MBA

Must Read Articles
Number Properties – Even Odd | LCM GCD | Statistics-1 | Statistics-2 | Remainders-1 | Remainders-2
Word Problems – Percentage 1 | Percentage 2 | Time and Work 1 | Time and Work 2 | Time, Speed and Distance 1 | Time, Speed and Distance 2
Advanced Topics- Permutation and Combination 1 | Permutation and Combination 2 | Permutation and Combination 3 | Probability
Geometry- Triangles 1 | Triangles 2 | Triangles 3 | Common Mistakes in Geometry
Algebra- Wavy line | Inequalities

Practice Questions
Number Properties 1 | Number Properties 2 | Algebra 1 | Geometry | Prime Numbers | Absolute value equations | Sets



| '4 out of Top 5' Instructors on gmatclub | 70 point improvement guarantee | www.e-gmat.com

General Discussion
SVP
SVP
User avatar
P
Joined: 18 Aug 2017
Posts: 2370
Location: India
Concentration: Sustainability, Marketing
GPA: 4
WE: Marketing (Energy and Utilities)
GMAT ToolKit User Premium Member CAT Tests
Re: If Anil can finish a job in 4 hours and Gustavo can finish the same jo  [#permalink]

Show Tags

New post 06 Mar 2019, 02:03
rate of A = 1/4 and rate of G= 1/6
together they can work @ rate = 10/24
time = 24/10 * 60 mins = 144 mins
or say 2 hrs 24 mins
IMO C

SajjadAhmad wrote:
If Anil can finish a job in 4 hours and Gustavo can finish the same job in 6 hours, how long would it take them, working together at their respective rates, to complete the job?

A. 1 hour, 50 minutes
B. 2 hours, 10 minutes
C. 2 hours, 24 minutes
D. 3 hours, 45 minutes
E. 4 hours, 30 minutes

_________________

If you liked my solution then please give Kudos. Kudos encourage active discussions.

GMAT Club Bot
Re: If Anil can finish a job in 4 hours and Gustavo can finish the same jo   [#permalink] 06 Mar 2019, 02:03
Display posts from previous: Sort by

If Anil can finish a job in 4 hours and Gustavo can finish the same jo

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

GMAT Club MBA Forum Home| About| Terms and Conditions and Privacy Policy| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.