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

It is currently 17 Sep 2014, 22:20

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 level of lead contamination in United States rivers

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
Senior Manager
Senior Manager
avatar
Joined: 11 Feb 2007
Posts: 360
Followers: 1

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

GMAT Tests User
The level of lead contamination in United States rivers [#permalink] New post 13 Mar 2007, 18:29
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
The level of lead contamination in United States rivers declined between 1975 and 1985. Federal regulations requiring a drop in industrial discharges of lead went into effect in 1975, but the major cause of the decline was a 75 percent drop in the use of leaded gasoline between 1975 and 1985.

Which of the following, if true, best supports the claim that the major cause of the decline in the level of lead contamination in United States rives was the decline in the use of leaded gasoline?

(A) The level of lead contamination in United States rivers fell sharply in both 1975 and 1983.

(B) Most of the decline in industrial discharges of lead occurred before 1976, but the largest decline in the level of river contamination occurred between 1980 and 1985.

(C) Levels of lead contamination in rivers fell sharply in 1975-1976 and rose very slightly over the next nine years.

(D) Levels of lead contamination rose in those rivers where there was reduced river flow due to drought.

(E) Although the use of leaded gasoline declined 75 percent between 1975 and1985, 80 percent of the decline took place in 1985.

Using POE, I picked D :?

OA: B

Last edited by ricokevin on 13 Mar 2007, 19:56, edited 1 time in total.
VP
VP
User avatar
Joined: 22 Oct 2006
Posts: 1443
Schools: Chicago Booth '11
Followers: 7

Kudos [?]: 149 [0], given: 12

GMAT Tests User
 [#permalink] New post 13 Mar 2007, 19:10
I like B , all of the industrial discharge stopped in 1976, but the major decline in lead ocurred in 1980, that implies that some other cause (hence lead gasoline) caused the decline.
Manager
Manager
avatar
Joined: 15 Nov 2006
Posts: 223
Location: Ohio
Followers: 1

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

GMAT Tests User
 [#permalink] New post 13 Mar 2007, 19:30
I like B too.

what is OA.
Senior Manager
Senior Manager
avatar
Joined: 11 Feb 2007
Posts: 360
Followers: 1

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

GMAT Tests User
 [#permalink] New post 13 Mar 2007, 19:53
I have included the OA above.
  [#permalink] 13 Mar 2007, 19:53
    Similar topics Author Replies Last post
Similar
Topics:
The level of lead contamination in United States rivers laxieqv 15 31 May 2006, 07:43
The level of lead contamination in United States rivers hellom3p 4 02 Mar 2006, 09:40
The level of lead contamination in United States rivers sushom101 6 18 Oct 2005, 14:52
The level of lead contamination in United States rivers rahulraao 12 19 Sep 2005, 18:48
The level of lead contamination in United States rivers WinWinMBA 3 29 Apr 2005, 16:35
Display posts from previous: Sort by

The level of lead contamination in United States rivers

  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®.