Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack
GMAT Club

 It is currently 23 Mar 2017, 09:46

# R2 Decisions:

Berkeley Haas; Decision Tracker (Join Chat Room 5)  |  Yale SOM; Decision Tracker (Join Chat Room 4

### 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 it takes 6 identical printing presses exactly 4 hours to

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

### Hide Tags

Senior Manager
Joined: 23 Aug 2003
Posts: 461
Location: In the middle of nowhere
Followers: 1

Kudos [?]: 24 [0], given: 0

If it takes 6 identical printing presses exactly 4 hours to [#permalink]

### Show Tags

08 Nov 2003, 14:43
5
This post was
BOOKMARKED
00:00

Difficulty:

25% (medium)

Question Stats:

74% (02:59) correct 26% (17:31) wrong based on 255 sessions

### HideShow timer Statistics

If it takes 6 identical printing presses exactly 4 hours to print 5,000 newspapers, how long would it take 3 of these presses to print 3,000 newspapers?

A. 3 hours, 20 minutes
B. 4 hours, 20 minutes
C. 4 hours, 48 minutes
D. 5 hours, 48 minutes
E. 6 hours, 50 minutes

OPEN DISCUSSION OF THIS QUESTION IS HERE: if-it-takes-6-identical-printing-presses-exactly-4-hours-to-132325.html
[Reveal] Spoiler: OA

_________________

"Start By Doing What Is Necessary ,Then What Is Possible & Suddenly You Will Realise That You Are Doing The Impossible"

Last edited by Bunuel on 29 Sep 2013, 09:42, edited 4 times in total.
Renamed the topic, edited the question and added the OA.
Manager
Joined: 26 Aug 2003
Posts: 233
Location: United States
Followers: 1

Kudos [?]: 13 [0], given: 0

### Show Tags

08 Nov 2003, 15:22
1
This post was
BOOKMARKED
I vote for C

In this case, it would be useful to find how many per hour for all presses
6 -> 4 => 5000
6 -> 1 => 1250

Since we need to find out the number for 3 presses we can get away with dividing the current number by 2 to find the hourly rate.
So,
3 -> 1 => 625

Now we need to find how much time it will take to print 3000 papers:
3000 / 625
= 4.8 hrs = 4 hrs. 48 min.
Senior Manager
Joined: 23 Aug 2003
Posts: 461
Location: In the middle of nowhere
Followers: 1

Kudos [?]: 24 [0], given: 0

### Show Tags

08 Nov 2003, 17:40
You are right..wonder_gmat
Thanks for the explanation.

Vivek.
_________________

"Start By Doing What Is Necessary ,Then What Is Possible & Suddenly You Will Realise That You Are Doing The Impossible"

Intern
Joined: 30 Oct 2003
Posts: 33
Location: uk
Followers: 0

Kudos [?]: 3 [0], given: 0

Re: Work PS [#permalink]

### Show Tags

19 Nov 2003, 17:51
All these work and rate problems revolve around Volume(Quantity) proportional to rate * time. This means in two different situations, these 3 variables will be in direct or inverse proportion. So you don't have to think of them as 3 different variables and there would be no need to build 3 equations and solve.

Here, the questions asks for time in one situation. Since you know the time in some situation(first situation) put it down first and then multiply it with ratios of the remaining variables in 2 situations. See below

4 * 3000/5000 * 6/3 = 24/5

Explanation for the 3 parts.

1) 4 - time in the situation that you know
2) 3000/5000 - (Ratio of papers in 2 situations) In the second situation, there less number of papers are printed, therefore lesser time would be required. Hence the lesser number 3000 would go to the numerator.
3) 6/3 - (Ratio of presses in 2 situaions) In the second situation, there are less number of presses, so more time would be required. Hence the higer number would go to the numerator.

Supposing there was another variable in the problem, say number of hours that the presses work. Say 6 in the fist case and 8 in the second case, we would have had a fourt part

4) 6/8

get the drift...?

vivek_dj wrote:
This problem has three variables...how do we solve such problems.

Thanks your responses would be highly appreciated.

Vivek
SVP
Joined: 30 Oct 2003
Posts: 1793
Location: NewJersey USA
Followers: 6

Kudos [?]: 100 [4] , given: 0

### Show Tags

14 Jan 2004, 12:08
4
KUDOS
If it takes 6 printing presses 4 hours to print 5000 newspapers
then
3 presses in 4 hours will complete 2500 news papers. They need to finish another 500 more to reach 3000

2500 take 4 hrs
500 will take 500 * 4 / 2500 = 0.8 hrs = 48 mins
so 4 hrs 48 mins is the answer.
Manager
Joined: 25 May 2011
Posts: 155
Followers: 2

Kudos [?]: 65 [1] , given: 71

Re: Work PS [#permalink]

### Show Tags

30 Oct 2011, 10:57
1
KUDOS
1
This post was
BOOKMARKED
6 printing presses need 4 hours to print 5000
so 3 printing presses need 8 hours to print 5000
how many hours to print 3000?
just proportion:

$$X=\frac{3000*8}{5000}=4.8$$

4 hours and 48 mins
Manager
Joined: 10 Sep 2013
Posts: 80
Concentration: Sustainability, International Business
Followers: 0

Kudos [?]: 72 [0], given: 2

Re: If it takes 6 printing presses 4 hours to print 5000 [#permalink]

### Show Tags

28 Sep 2013, 10:53
vivek_dj wrote:
If it takes 6 printing presses 4 hours to print 5000 newspapers, how long should it take 3 presses to print 3000 newspapers?

A) 3 hrs., 20 min.

B) 4 hrs., 20 min.

C) 4 hrs., 48 min.

D) 5 hrs., 48 min.

E) 6 hrs., 50 min

This problem has three variables...how do we solve such problems.

Thanks your responses would be highly appreciated.

Vivek

Or you can use the table

R X T = W
(5000/4) 4 5000 6 machines = 5000/4
3 machines = 5000/8 = 625
625 ? 3000

Find time: 3000/625 = 4.8 = 4 hrs 48 mins

ans: C
_________________

Kudos if I helped

Math Expert
Joined: 02 Sep 2009
Posts: 37560
Followers: 7391

Kudos [?]: 99245 [1] , given: 11010

Re: If it takes 6 identical printing presses exactly 4 hours to [#permalink]

### Show Tags

29 Sep 2013, 09:42
1
KUDOS
Expert's post
1
This post was
BOOKMARKED
If it takes 6 identical printing presses exactly 4 hours to print 5,000 newspapers, how long would it take 3 of these presses to print 3,000 newspapers?
A. 3 hours, 20 minutes
B. 4 hours, 20 minutes
C. 4 hours, 48 minutes
D. 5 hours, 48 minutes
E. 6 hours, 50 minutes

6 presses - 5,000 newspapers - 4 hours ;
3 presses - 2,500 newspapers - 4 hours ;
3 presses - 3,000 newspapers - 4 hours + 1/5*4 hours = 4 hours, 48 minutes (since 2,500+1/5*2,500=3,000).

OPEN DISCUSSION OF THIS QUESTION IS HERE: if-it-takes-6-identical-printing-presses-exactly-4-hours-to-132325.html
_________________
Re: If it takes 6 identical printing presses exactly 4 hours to   [#permalink] 29 Sep 2013, 09:42
Similar topics Replies Last post
Similar
Topics:
8 Problem Solving Pack 3, Question 4 Two printing presses begin... 4 04 Nov 2015, 19:13
4 It takes 50 identical printing presses 8 hours to print 500,000 papers 10 21 Jul 2015, 03:12
14 If it takes 6 identical printing presses exactly 4 hours to 15 10 May 2012, 05:14
69 It takes printer A 4 more minutes than printer B to print 40 32 03 Aug 2010, 12:13
3 It takes printer A 4 more minutes than printer B to print 40 6 15 Feb 2010, 00:21
Display posts from previous: Sort by

# If it takes 6 identical printing presses exactly 4 hours to

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group and phpBB SEO 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®.