GMAT Question of the Day - Daily to your Mailbox; hard ones only

It is currently 21 Nov 2018, 10:13

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.

Close

Request Expert Reply

Confirm Cancel
Events & Promotions in November
PrevNext
SuMoTuWeThFrSa
28293031123
45678910
11121314151617
18192021222324
2526272829301
Open Detailed Calendar
  • All GMAT Club Tests are Free and open on November 22nd in celebration of Thanksgiving Day!

     November 22, 2018

     November 22, 2018

     10:00 PM PST

     11:00 PM PST

    Mark your calendars - All GMAT Club Tests are free and open November 22nd to celebrate Thanksgiving Day! Access will be available from 0:01 AM to 11:59 PM, Pacific Time (USA)
  • Key Strategies to Master GMAT SC

     November 24, 2018

     November 24, 2018

     07:00 AM PST

     09:00 AM PST

    Attend this webinar to learn how to leverage Meaning and Logic to solve the most challenging Sentence Correction Questions.

Since 1990 there are three times as many cases of West Nile virus diag

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

Hide Tags

Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50730
Since 1990 there are three times as many cases of West Nile virus diag  [#permalink]

Show Tags

New post 18 Oct 2018, 05:07
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

86% (00:52) correct 14% (00:39) wrong based on 81 sessions

HideShow timer Statistics

Since 1990 there are three times as many cases of West Nile virus diagnosed, and there has been no progress in the search for a vaccine.


(A) Since 1990 there are three times as many cases of West Nile virus diagnosed

(B) The diagnosis of cases of West Nile virus was only one-third in 1990

(C) The diagnosis of cases of West Nile virus has increased three times from 1990 on

(D) Tripling since 1990, there are now three times as many cases of West Nile virus diagnosed

(E) The number of diagnoses of West Nile virus has tripled since 1990

_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

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?
Extra-hard Quant Tests with Brilliant Analytics

Manager
Manager
User avatar
B
Joined: 25 Nov 2017
Posts: 88
Location: India
GMAT 1: 590 Q47 V25
GPA: 3.56
CAT Tests
Re: Since 1990 there are three times as many cases of West Nile virus diag  [#permalink]

Show Tags

New post 18 Oct 2018, 05:32
Since 1990 there are three times as many cases of West Nile virus diagnosed, and there has been no progress in the search for a vaccine.


(A) Since 1990 there are three times as many cases of West Nile virus diagnosed : With since ,here, present perfect tense should be used.The non underlined part after and is also in present perfect tense.

(B) The diagnosis of cases of West Nile virus was only one-third in 1990: Meaning error. Original sentence conveys increase in number of instances of diagnosis.

(C) The diagnosis of cases of West Nile virus has increased three times from 1990 on : Same as in B.

(D) Tripling since 1990, there are now three times as many cases of West Nile virus diagnosed : After the modifier, doer of the action tripling should be mentioned.

(E) The number of diagnoses of West Nile virus has tripled since 1990 : CORRECT
Manager
Manager
avatar
S
Joined: 10 Jan 2013
Posts: 150
Location: India
Concentration: General Management, Strategy
GMAT 1: 600 Q43 V30
GPA: 3.95
GMAT ToolKit User Reviews Badge
Re: Since 1990 there are three times as many cases of West Nile virus diag  [#permalink]

Show Tags

New post 18 Oct 2018, 08:00
I also go with E.

With since you use present perfect tense

Posted from my mobile device
Math Expert
User avatar
V
Joined: 02 Sep 2009
Posts: 50730
Re: Since 1990 there are three times as many cases of West Nile virus diag  [#permalink]

Show Tags

New post 21 Oct 2018, 22:57
Bunuel wrote:
Since 1990 there are three times as many cases of West Nile virus diagnosed, and there has been no progress in the search for a vaccine.


(A) Since 1990 there are three times as many cases of West Nile virus diagnosed

(B) The diagnosis of cases of West Nile virus was only one-third in 1990

(C) The diagnosis of cases of West Nile virus has increased three times from 1990 on

(D) Tripling since 1990, there are now three times as many cases of West Nile virus diagnosed

(E) The number of diagnoses of West Nile virus has tripled since 1990


MANHATTAN REVIEW OFFICIAL EXPLANATION:



Choice A uses ‘since’ and the present tense. The present perfect is necessary. For example, ‘since 1990 there have been many cases...’. The correct subject of the sentence is ‘the number of diagnoses’, not ‘the diagnosis of cases’. Eliminate B and C. ‘Tripling’ in D is incorrect. Again the present perfect would have to be used to describe an action which started in the past and has continued up to the present. Choice E, the correct answer, shows this use of the present perfect. ‘The number...has tripled.’
_________________

New to the Math Forum?
Please read this: Ultimate GMAT Quantitative Megathread | All You Need for Quant | PLEASE READ AND FOLLOW: 12 Rules for Posting!!!

Resources:
GMAT Math Book | Triangles | Polygons | Coordinate Geometry | Factorials | Circles | Number Theory | Remainders; 8. Overlapping Sets | PDF of Math Book; 10. Remainders | GMAT Prep Software Analysis | SEVEN SAMURAI OF 2012 (BEST DISCUSSIONS) | Tricky questions from previous years.

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?
Extra-hard Quant Tests with Brilliant Analytics

GMAT Club Bot
Re: Since 1990 there are three times as many cases of West Nile virus diag &nbs [#permalink] 21 Oct 2018, 22:57
Display posts from previous: Sort by

Since 1990 there are three times as many cases of West Nile virus diag

  new topic post reply Question banks Downloads My Bookmarks Reviews Important topics  


Copyright

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

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

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®.