Find all School-related info fast with the new School-Specific MBA Forum

It is currently 24 Jul 2014, 19:46

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.

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Running at their respective constant rates, machine X takes

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
VP
VP
avatar
Joined: 22 Aug 2005
Posts: 1128
Location: CA
Followers: 1

Kudos [?]: 23 [0], given: 0

GMAT Tests User
Running at their respective constant rates, machine X takes [#permalink] New post 07 Dec 2005, 14:43
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Running at their respective constant rates, machine X takes 2 days longer to produce w widgets than machine Y. At these rates, if the two machines together produce (5/4)*w widgets in 3 days, how many days would it take machine X alone to produce 2w widgets?

Please tell how much time it took to reach ans, honestly :wink:
_________________

Whether you think you can or think you can't. You're right! - Henry Ford (1863 - 1947)

Senior Manager
Senior Manager
avatar
Joined: 05 Oct 2005
Posts: 487
Followers: 1

Kudos [?]: 1 [0], given: 0

GMAT Tests User
 [#permalink] New post 07 Dec 2005, 18:38
4 mins... no answer :shock:
SVP
SVP
User avatar
Joined: 16 Oct 2003
Posts: 1816
Followers: 4

Kudos [?]: 30 [0], given: 0

GMAT Tests User
 [#permalink] New post 07 Dec 2005, 18:42
12 days is correct

1/x+1/x+2 = 5/12
x = 4
so the slowest will take 6*2 (widgets) = 12
Director
Director
avatar
Joined: 14 Sep 2005
Posts: 998
Location: South Korea
Followers: 2

Kudos [?]: 26 [0], given: 0

GMAT Tests User
 [#permalink] New post 07 Dec 2005, 19:13
5 minutes, and I gave up. :oops:

* The maximum time you may assign to one math question is said to be 5 minutes.
_________________

Auge um Auge, Zahn um Zahn :twisted: !

VP
VP
avatar
Joined: 22 Aug 2005
Posts: 1128
Location: CA
Followers: 1

Kudos [?]: 23 [0], given: 0

GMAT Tests User
 [#permalink] New post 08 Dec 2005, 09:07
Good job guys!!! OA is 12.

I would think its hard bin question. Moreever, it might have been a little faster for some if ACs were given (those who are good at backsolving) :?
_________________

Whether you think you can or think you can't. You're right! - Henry Ford (1863 - 1947)

SVP
SVP
User avatar
Joined: 28 May 2005
Posts: 1743
Location: Dhaka
Followers: 6

Kudos [?]: 30 [0], given: 0

GMAT Tests User
Divisibility rule [#permalink] New post 09 Dec 2005, 11:42
Does anyone has any link/resource for Divisibility rules for different intergers?
_________________

hey ya......

VP
VP
avatar
Joined: 06 Jun 2004
Posts: 1062
Location: CA
Followers: 2

Kudos [?]: 19 [0], given: 0

GMAT Tests User
 [#permalink] New post 09 Dec 2005, 13:32
Took 2 minutes..

x's output per day = 1/(y+2)
y's output per day = 1/y

Working together, they produce (5/4)W in 3 days ==> 5/12W in 1 day

1/(y+2) + 1/y = 5/12 ==> Solve for y, y = 4 or -(6/5). Since y cannot be negative...y = 4

X's output per day is therefore 1/6 ==> it takes x 6 days to produce W ==> 12 days to produce 2W
  [#permalink] 09 Dec 2005, 13:32
    Similar topics Author Replies Last post
Similar
Topics:
9 Experts publish their posts in the topic Running at their respective constant rates, Machine X takes Bunuel 6 18 Mar 2014, 00:39
Running at their respective constant rates, machine X takes gluon 7 22 Sep 2007, 06:52
Running at their respective constant rates, machine X takes joemama142000 3 06 Feb 2006, 21:56
Running at their respective constant rates, machine X takes LADodgers 2 05 Nov 2004, 23:42
Running at their respective constant rates, machine X takes falcor 2 17 Sep 2004, 11:43
Display posts from previous: Sort by

Running at their respective constant rates, machine X takes

  Question banks Downloads My Bookmarks Reviews Important topics  


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

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®.