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

It is currently 27 Aug 2014, 19:24

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

If a, b, c, and d are positive integers, is (a/b) (c/d) > c/

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Director
Director
User avatar
Joined: 08 Jul 2004
Posts: 606
Followers: 2

Kudos [?]: 33 [0], given: 0

GMAT Tests User
If a, b, c, and d are positive integers, is (a/b) (c/d) > c/ [#permalink] New post 23 Sep 2004, 16:52
00:00
A
B
C
D
E

Difficulty:

  25% (medium)

Question Stats:

66% (01:48) correct 34% (01:22) wrong based on 112 sessions
If a, b, c, and d are positive integers, is (a/b) (c/d) > c/b?

(1) c > b
(2) a > d
[Reveal] Spoiler: OA

Last edited by Bunuel on 21 Mar 2013, 03:35, edited 1 time in total.
Renamed the topic, edited the question and added the OA.
GMAT Club Legend
GMAT Club Legend
avatar
Joined: 15 Dec 2003
Posts: 4318
Followers: 20

Kudos [?]: 156 [0], given: 0

GMAT Tests User
 [#permalink] New post 23 Sep 2004, 17:11
30sec
B it is
a/b*c/d = b/c*a/d
All we need to know is for a to be greater than d to create a larger product than b/c on the other side of the inequality. B gives that away
_________________

Best Regards,

Paul

Director
Director
User avatar
Joined: 08 Jul 2004
Posts: 606
Followers: 2

Kudos [?]: 33 [0], given: 0

GMAT Tests User
 [#permalink] New post 13 Jan 2005, 08:23
Can you plz explain with numbers. Suppose c=1000,b=1. Does this any answer or be interchanging the value of b and c?
S
Director
Director
User avatar
Joined: 31 Aug 2004
Posts: 609
Followers: 3

Kudos [?]: 21 [0], given: 0

GMAT Tests User
 [#permalink] New post 13 Jan 2005, 08:46
Saurya,

Whithout using any number, what you get from the stem is (a/b) (c/d)
in another way it is equal to a/d . c/b so greater than c/b if a/d > 1
That is exactly the purpose of second statement.
Director
Director
User avatar
Joined: 08 Jul 2004
Posts: 606
Followers: 2

Kudos [?]: 33 [0], given: 0

GMAT Tests User
 [#permalink] New post 13 Jan 2005, 09:05
Thanks twixt. I still haven't got it. a/d has to greater than 1 provided b/c is not very small. Say if b/c is 0.001 and c/b is 1000, then does B alone anaswer the Q. so if a/d is 5 then, 5*0.001>1000 which is not true. If we reverse it, it becomes 5*1000>0.001. whic is true. So I am not sure if B alone can answer.
Plz bear with me as i am really not getting it.
S
Manager
Manager
avatar
Joined: 01 Jan 2005
Posts: 168
Location: NJ
Followers: 1

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

GMAT Tests User
 [#permalink] New post 13 Jan 2005, 10:43
We have to calculate whether (a/b)*(c/d)>(c/b) or not?

which is equivalent to

(a/d)*(c/b)>c/b
divide both sides by c/b
a/d>1
since a>d, a/d >1.

Thus, B is enough.
Manager
Manager
User avatar
Joined: 31 Aug 2004
Posts: 169
Location: Vancouver, BC, Canada
Followers: 1

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

GMAT Tests User
 [#permalink] New post 13 Jan 2005, 18:45
saurya_s wrote:
Thanks twixt. I still haven't got it. a/d has to greater than 1 provided b/c is not very small. Say if b/c is 0.001 and c/b is 1000, then does B alone anaswer the Q. so if a/d is 5 then, 5*0.001>1000 which is not true. If we reverse it, it becomes 5*1000>0.001. whic is true. So I am not sure if B alone can answer.
Plz bear with me as i am really not getting it.
S


I am not sure what do you try to say here. The question does not ask you whether (a/b) x (c/d) > (b/c), unless you typed it wrong in the first place.
Director
Director
User avatar
Joined: 08 Jul 2004
Posts: 606
Followers: 2

Kudos [?]: 33 [0], given: 0

GMAT Tests User
 [#permalink] New post 14 Jan 2005, 02:18
Yes, that is what I have been reading. The q is correct but I have been reading as you said.
Thanks a lot for noting that.
Director
Director
User avatar
Joined: 07 Jun 2004
Posts: 618
Location: PA
Followers: 2

Kudos [?]: 164 [0], given: 22

GMAT Tests User
 [#permalink] New post 14 Jan 2005, 15:22
no need for picking numbers

just simplify the equation you will get Statement II

Answer B
Intern
Intern
avatar
Joined: 06 Mar 2013
Posts: 1
Followers: 0

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

Re: Q36: If a, b, c, and d are positive integers, is (a/b) (c/d) [#permalink] New post 21 Mar 2013, 03:25
saurya_s wrote:
Q36:
If a, b, c, and d are positive integers, is (a/b) (c/d) > c/b?
(1) c > b
(2) a > d


ac/bd > c/b
a/d > 1
a>d
Expert Post
Math Expert
User avatar
Joined: 02 Sep 2009
Posts: 22141
Followers: 3406

Kudos [?]: 24887 [0], given: 2697

Re: If a, b, c, and d are positive integers, is (a/b) (c/d) > c/ [#permalink] New post 21 Mar 2013, 03:40
Expert's post
If a, b, c, and d are positive integers, is (a/b) (c/d) > c/b?

Is \frac{a}{b}*\frac{c}{d}>\frac{c}{b}? --> is \frac{c}{b}*\frac{a}{d}>\frac{c}{b}? --> since all variables are positive, then we can safely reduce by c/b: is \frac{a}{d}>1? --> cross-multiply: is a>d?

(1) c > b. Not sufficient.
(2) a > d. Sufficient.

Answer: B.
_________________

NEW TO MATH FORUM? PLEASE READ THIS: ALL YOU NEED FOR QUANT!!!

PLEASE READ AND FOLLOW: 11 Rules for Posting!!!

RESOURCES: [GMAT MATH BOOK]; 1. Triangles; 2. Polygons; 3. Coordinate Geometry; 4. Factorials; 5. Circles; 6. Number Theory; 7. Remainders; 8. Overlapping Sets; 9. PDF of Math Book; 10. Remainders; 11. GMAT Prep Software Analysis NEW!!!; 12. SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) NEW!!!; 12. Tricky questions from previous years. NEW!!!;

COLLECTION OF QUESTIONS:
PS: 1. Tough and Tricky questions; 2. Hard questions; 3. Hard questions part 2; 4. Standard deviation; 5. Tough Problem Solving Questions With Solutions; 6. Probability and Combinations Questions With Solutions; 7 Tough and tricky exponents and roots questions; 8 12 Easy Pieces (or not?); 9 Bakers' Dozen; 10 Algebra set. ,11 Mixed Questions, 12 Fresh Meat

DS: 1. DS tough questions; 2. DS tough questions part 2; 3. DS tough questions part 3; 4. DS Standard deviation; 5. Inequalities; 6. 700+ GMAT Data Sufficiency Questions With Explanations; 7 Tough and tricky exponents and roots questions; 8 The Discreet Charm of the DS ; 9 Devil's Dozen!!!; 10 Number Properties set., 11 New DS set.


What are GMAT Club Tests?
25 extra-hard Quant Tests

Get the best GMAT Prep Resources with GMAT Club Premium Membership

Re: If a, b, c, and d are positive integers, is (a/b) (c/d) > c/   [#permalink] 21 Mar 2013, 03:40
    Similar topics Author Replies Last post
Similar
Topics:
If a, b, c, and d are positive integers, is (a/b) (c/d) > udaymathapati 5 28 Aug 2010, 02:04
1 If a,b,c and d are positive integers, is (a/b) (c/d) > amitjash 4 01 Aug 2010, 21:11
If a, b, c, and d are positive integers, is (a/b) (c/d) > Jcpenny 4 09 Nov 2008, 19:50
If a, b, c, and d are positive integers, is (a/b) (c/d) > Cedars 5 16 Oct 2006, 17:31
If a, b, c, and d are positive integers, is (a/b) (c/d) > perezhan 3 16 Mar 2005, 18:22
Display posts from previous: Sort by

If a, b, c, and d are positive integers, is (a/b) (c/d) > c/

  Question banks Downloads My Bookmarks Reviews Important topics  


cron

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®.