It is currently 25 Feb 2018, 03:12

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# If Max can complete a job in 4 hours and Nick can complete the same jo

Author Message
TAGS:

### Hide Tags

VP
Status: Preparing for the GMAT
Joined: 02 Nov 2016
Posts: 1369
Location: Pakistan
GPA: 3.4
If Max can complete a job in 4 hours and Nick can complete the same jo [#permalink]

### Show Tags

05 May 2017, 10:54
1
KUDOS
00:00

Difficulty:

25% (medium)

Question Stats:

88% (00:56) correct 12% (01:00) wrong based on 17 sessions

### HideShow timer Statistics

If Max can complete a job in 4 hours and Nick can complete the same job in 6 hours, how many fewer hours do Max and Nick working together need to complete the job than Max alone needs to complete the job?

A. 1.6
B. 2.4
C. 3.2
D. 3.4
E. 5.0
[Reveal] Spoiler: OA

_________________

Official PS Practice Questions
Press +1 Kudos if this post is helpful

BSchool Forum Moderator
Joined: 26 Feb 2016
Posts: 2092
Location: India
GPA: 3.12
Re: If Max can complete a job in 4 hours and Nick can complete the same jo [#permalink]

### Show Tags

05 May 2017, 11:04
1
KUDOS
Assume 24 units of work
Max does it in 4 hours, hence his rate of work is 6 units/hr
Nick does it in 6 hours, hence his rate of work is 10 units/hr

Together ,they do 10 units of work. Hence it would take them 2.4 hours to complete the work, which is 1.6 hours less than Max takes to finish the work(Option A)

Sent from my LG-H818 using GMAT Club Forum mobile app
_________________

Stay hungry, Stay foolish

Intern
Joined: 29 Apr 2017
Posts: 30
Location: India
Concentration: General Management, Other
WE: Engineering (Computer Software)
Re: If Max can complete a job in 4 hours and Nick can complete the same jo [#permalink]

### Show Tags

05 May 2017, 11:04
1
This post was
BOOKMARKED
If Max can complete a job in 4 hours and Nick can complete the same job in 6 hours, how many fewer hours do Max and Nick working together need to complete the job than Max alone needs to complete the job?

A. 1.6
B. 2.4
C. 3.2
D. 3.4
E. 5.0

Max can complete a job in 4 hours.
Nick can complete the same job in 6 hours.
Therefore, working together Max and Nick can complete the job in $$\frac{6*4}{6+4}$$ = 2.4 hours
Thus, working together they need 4-2.4 = 1.6 fewer hours than Max alone to complete the job.

If you like my post, please encourage by giving KUDOS.
Board of Directors
Status: QA & VA Forum Moderator
Joined: 11 Jun 2011
Posts: 3326
Location: India
GPA: 3.5
Re: If Max can complete a job in 4 hours and Nick can complete the same jo [#permalink]

### Show Tags

05 May 2017, 11:07
If Max can complete a job in 4 hours and Nick can complete the same job in 6 hours, how many fewer hours do Max and Nick working together need to complete the job than Max alone needs to complete the job?

A. 1.6
B. 2.4
C. 3.2
D. 3.4
E. 5.0

Let the total work be 12 units..

Max's efficiency = 3 units/hr
Nick's efficiency = 2 units/hr

Combined efficiency = 5 units/hr

Quote:
how many fewer hours do Max and Nick working together need to complete the job than Max alone needs to complete the job

Combined time taken = 12/5 => 2.4 Hrs

Time taken by Max = 12/3 => 4 Hrs

So, Max and Nick can complete the work in 1.6 Hours less, answer will be (A)
_________________

Thanks and Regards

Abhishek....

PLEASE FOLLOW THE RULES FOR POSTING IN QA AND VA FORUM AND USE SEARCH FUNCTION BEFORE POSTING NEW QUESTIONS

How to use Search Function in GMAT Club | Rules for Posting in QA forum | Writing Mathematical Formulas |Rules for Posting in VA forum | Request Expert's Reply ( VA Forum Only )

Manager
Joined: 14 Sep 2016
Posts: 59
Concentration: Finance, Economics
Re: If Max can complete a job in 4 hours and Nick can complete the same jo [#permalink]

### Show Tags

05 May 2017, 11:08
1
KUDOS
If Max can complete a job in 4 hours and Nick can complete the same job in 6 hours, how many fewer hours do Max and Nick working together need to complete the job than Max alone needs to complete the job?

A. 1.6
B. 2.4
C. 3.2
D. 3.4
E. 5.0

Max

$$\frac{1}{4}$$ job an hour

Nick

$$\frac{1}{6}$$ job an hour

Together

$$\frac{2}{12}$$ + $$\frac{3}{12}$$ = $$\frac{5}{12}$$ job an hour or 2$$\frac{2}{5}$$ hours for the job.

4 - 2.4 = 1.6
Re: If Max can complete a job in 4 hours and Nick can complete the same jo   [#permalink] 05 May 2017, 11:08
Display posts from previous: Sort by