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

It is currently 23 Oct 2014, 00:23

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

The Earth s rivers constantly carry dissolved salts into its

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
User avatar
Status: Time to step up the tempo
Joined: 24 Jun 2010
Posts: 410
Location: Milky way
Schools: ISB, Tepper - CMU, Chicago Booth, LSB
Followers: 7

Kudos [?]: 119 [0], given: 50

Re: CR Salt content [#permalink] New post 05 Oct 2010, 18:24
I initially had a strong urge to choose E after I narrowed down A and E.

However after some time thought option E could be broken but not A. Here is why:

Option E talks about "none of the salt getting used up". By taking the resulting increase in salt levels in the oceans over the past hundred years we could accommodate the the condition wherein some of the salt is being used up.

Hence option E is not the safe assumption to make. Hence A is the answer.
_________________

:good Support GMAT Club by putting a GMAT Club badge on your blog :thanks

Intern
Intern
avatar
Joined: 17 Aug 2010
Posts: 18
Followers: 2

Kudos [?]: 2 [0], given: 4

Re: CR Salt content [#permalink] New post 05 Oct 2010, 21:30
C and D are out .
From A, B and E
I chose E.
For A-it is not about large quantities or small quantities.
For B-We are concerned about the total salt content of all rivers to be same not independent rivers.
For E-it is a perfect answer.
Furthermore if you negate E.conclusion weakens that we may not get the true age.

Please let me know if i am correct
_________________

Kingfisher
The king of good times and a companion in bad ones......

Current Student
User avatar
Joined: 16 Sep 2010
Posts: 227
Location: United States
Concentration: Finance, Real Estate
GMAT 1: 740 Q48 V42
Followers: 7

Kudos [?]: 61 [0], given: 2

Re: CR Salt content [#permalink] New post 13 Oct 2010, 19:24
Has to be A. At no point does the argument make any assumptions about the river's salt content being the same. Since rivers dump into the ocean their salinity can be different. It does make the assumption that at one point the ocean had a salt free base that was likely equal to the rivers, but this is not what B says. So it has to be A.
Manager
Manager
avatar
Joined: 25 Aug 2010
Posts: 98
Followers: 1

Kudos [?]: 4 [0], given: 1

Re: CR Salt content [#permalink] New post 14 Oct 2010, 09:25
E
Manager
Manager
avatar
Joined: 19 Apr 2010
Posts: 214
Schools: ISB, HEC, Said
Followers: 4

Kudos [?]: 20 [0], given: 28

Re: CR Salt content [#permalink] New post 15 Oct 2010, 04:25
I chose E. CRs are killing me
Senior Manager
Senior Manager
avatar
Joined: 08 Jun 2010
Posts: 397
Location: United States
Concentration: General Management, Finance
GMAT 1: 680 Q50 V32
Followers: 3

Kudos [?]: 60 [0], given: 13

Re: CR Salt content [#permalink] New post 07 Oct 2011, 04:35
A) The quantities of dissolved salts deposited by rivers in the Earth’s oceans have not been unusually large during the past hundred years.
(E) None of the salts carried into the Earth’s oceans by rivers are used up by biological activity in the oceans.

Between A and E.
1. Averages get skewed if there is unusual variations. The argument assumes there are NONE.
2. Try and negate this --> NOT ALL of the salts carried into the Earth's oceans by rivers are used by biological activity in the oceans. Now it becomes clear that this sentence is harmless to the argument.

The problem here lies in the negation process. We have to be careful not to go for POLAR opposites during negation. If we go for POLAR opposites the answer becomes " ALL of the salts carried into the Earth’s oceans by rivers are used up by biological activity in the oceans."
Manager
Manager
avatar
Joined: 20 Nov 2010
Posts: 227
Followers: 4

Kudos [?]: 7 [0], given: 38

Re: CR Salt content [#permalink] New post 07 Oct 2011, 06:59
Nice question. Narrowed it down to A and E. But chose E, without further thoughts. Got it wrong :(

A) The quantities of dissolved salts deposited by rivers in the Earth’s oceans have not been unusually large during the past hundred years.
(E) None of the salts carried into the Earth’s oceans by rivers are used up by biological activity in the oceans.

Loved the explanation that we can account the factor of consumption of salt but not for unusually large amount of deposits of salt for which we have no data.
_________________

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
MGMAT 6 650 (51,31) on 31/8/11
MGMAT 1 670 (48,33) on 04/9/11
MGMAT 2 670 (47,34) on 07/9/11
MGMAT 3 680 (47,35) on 18/9/11
GMAT Prep1 680 ( 50, 31) on 10/11/11

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CR notes
http://gmatclub.com/forum/massive-collection-of-verbal-questions-sc-rc-and-cr-106195.html#p832142
http://gmatclub.com/forum/1001-ds-questions-file-106193.html#p832133
http://gmatclub.com/forum/gmat-prep-critical-reasoning-collection-106783.html
http://gmatclub.com/forum/how-to-get-6-0-awa-my-guide-64327.html
http://gmatclub.com/forum/how-to-get-6-0-awa-my-guide-64327.html?hilit=chineseburned

Manager
Manager
avatar
Joined: 11 Feb 2011
Posts: 80
Followers: 1

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

Re: CR Salt content [#permalink] New post 07 Oct 2011, 14:38
A is the answer...
Intern
Intern
avatar
Joined: 05 May 2010
Posts: 7
Followers: 0

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

Re: CR Salt content [#permalink] New post 09 Oct 2011, 18:47
i am also with E
Manager
Manager
avatar
Joined: 10 Jul 2011
Posts: 115
GMAT 1: 700 Q50 V34
GMAT 2: 710 Q50 V35
Followers: 3

Kudos [?]: 21 [0], given: 10

Re: CR Salt content [#permalink] New post 12 Oct 2011, 05:54
IMO A.
It was clearly between A and E.

Here is what I thought:

The key word here is "increase". The questions clearly says that the age can be calculated based on the "increase" in salt level. Hence, as long as the salt lost due to biological activity is constant, it does not make any difference to the process defined.
Manager
Manager
User avatar
Joined: 20 Jul 2011
Posts: 152
GMAT Date: 10-21-2011
Followers: 0

Kudos [?]: 36 [0], given: 15

Re: CR Salt content [#permalink] New post 12 Oct 2011, 07:25
thanks for this!
durgesh79 wrote:
between A and E...
one of the best ways for CR assumption questions
negate the assumption and the argument should fall apart.

negate E
Some of the salts carried into the Earth’s oceans by rivers are used up by biological activity in the oceans.
OK.. but if the portion of salt consumed by biological activities has remained constant over the years ... we can still predict the age of the oceans ... the argument doesnt fall apart

negate A
The quantities of dissolved salts deposited by rivers in the Earth’s oceans have been unusually large during the past hundred years.
it means that the rate has not been constant .... we cant predict the age .... agrument falls apart ...

right Option A

_________________

"The best day of your life is the one on which you decide your life is your own. No apologies or excuses. No one to lean on, rely on, or blame. The gift is yours - it is an amazing journey - and you alone are responsible for the quality of it. This is the day your life really begins." - Bob Moawab

Manager
Manager
avatar
Joined: 21 Nov 2010
Posts: 133
Followers: 0

Kudos [?]: 5 [0], given: 12

Re: CR Salt content [#permalink] New post 12 Oct 2011, 16:58
A
Manager
Manager
User avatar
Joined: 11 Jul 2009
Posts: 156
WE: Design (Computer Software)
Followers: 1

Kudos [?]: 17 [0], given: 41

GMAT ToolKit User
Re: CR Salt content [#permalink] New post 21 Oct 2011, 12:25
+1 A
_________________

Kaustubh

Manager
Manager
avatar
Joined: 16 Aug 2011
Posts: 98
Followers: 0

Kudos [?]: 1 [0], given: 3

Re: CR Salt content [#permalink] New post 01 Nov 2011, 22:40
+1 A
Current Student
User avatar
Joined: 16 Sep 2010
Posts: 227
Location: United States
Concentration: Finance, Real Estate
GMAT 1: 740 Q48 V42
Followers: 7

Kudos [?]: 61 [0], given: 2

Re: The Earth s rivers constantly carry dissolved salts into its [#permalink] New post 16 Nov 2011, 22:28
Between E and A but E fails the negation test so A it is.
Director
Director
avatar
Joined: 28 Jul 2011
Posts: 582
Location: United States
Concentration: International Business, General Management
GPA: 3.86
WE: Accounting (Commercial Banking)
Followers: 1

Kudos [?]: 55 [0], given: 16

Re: The Earth s rivers constantly carry dissolved salts into its [#permalink] New post 16 Nov 2011, 23:59
Still not satisfied with A,


can anyone clearly explain why not E and why A?

Thanks in advance
_________________

+1 Kudos If found helpful..

Manager
Manager
avatar
Status: Time to apply!
Joined: 24 Aug 2011
Posts: 221
Location: India
Concentration: Finance, Entrepreneurship
GMAT 1: 600 Q48 V25
GMAT 2: 660 Q50 V29
GMAT 3: 690 Q49 V34
GPA: 3.2
WE: Engineering (Computer Software)
Followers: 4

Kudos [?]: 30 [0], given: 166

Re: The Earth s rivers constantly carry dissolved salts into its [#permalink] New post 17 Nov 2011, 00:29
A tricky one to choose between A and E ! I agree with the explanation of A . But could someone explain a bit more why E is not that much convincing like A?

Thanks
_________________

Didn't give up !!! Still Trying!!

Manager
Manager
avatar
Joined: 06 Jun 2011
Posts: 159
Followers: 0

Kudos [?]: 18 [0], given: 15

Re: The Earth s rivers constantly carry dissolved salts into its [#permalink] New post 17 Nov 2011, 02:02
Got it wrong. Opted for B
Manager
Manager
User avatar
Joined: 01 Jan 2011
Posts: 78
Schools: INSEAD,IIMA,IIMB
Followers: 0

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

Re: The Earth s rivers constantly carry dissolved salts into its [#permalink] New post 21 Nov 2011, 01:18
imo A
_________________

_________________________
Try and you will succeed !

Manager
Manager
User avatar
Joined: 29 Jun 2011
Posts: 165
WE 1: Information Technology(Retail)
Followers: 3

Kudos [?]: 13 [0], given: 29

Re: The Earth s rivers constantly carry dissolved salts into its [#permalink] New post 21 Nov 2011, 04:09
IMO E,

OA -A cannot be correct.The conclusion is that from the deposited salt the oceans age can be calculated.However, if the salt is used up then the age cannot be accurately calculated.

Hnece E is the perfect assumption.
Re: The Earth s rivers constantly carry dissolved salts into its   [#permalink] 21 Nov 2011, 04:09
    Similar topics Author Replies Last post
Similar
Topics:
Experts publish their posts in the topic The Earth's rivers constantly carry dissolved salts into its ttram 19 06 Jan 2008, 16:04
The Earth s rivers constantly carry dissolved salts into its gregspirited 12 20 Dec 2007, 15:47
The Earth s rivers constantly carry dissolved salts into its nakib77 21 24 Dec 2005, 09:44
The Earth s rivers constantly carry dissolved salts into its rahulraao 11 23 Nov 2005, 18:10
The Earth's rivers constantly carry dissolved salts into its pb_india 24 20 May 2005, 10:53
Display posts from previous: Sort by

The Earth s rivers constantly carry dissolved salts into its

  Question banks Downloads My Bookmarks Reviews Important topics  

Go to page   Previous    1   2   3   4    Next  [ 64 posts ] 



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®.