Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 24 May 2017, 04:55

### 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

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

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# To develop more accurate population forecasts, demographers

Author Message
TAGS:

### Hide Tags

Intern
Joined: 07 Nov 2011
Posts: 31
Followers: 0

Kudos [?]: 3 [0], given: 9

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

03 Jan 2012, 07:05
00:00

Difficulty:

15% (low)

Question Stats:

69% (01:41) correct 31% (00:45) wrong based on 1481 sessions

### HideShow timer Statistics

TommyWallach wrote:
Hey All,

I got asked about this privately, but I think the same question was asked by mymisc as well. The question is, do we need the "would" here, and why? The issue is that this sentence is a hypothetical/conditional:

To develop more accurate population forecasts

We could reword this as "If we wanted more accurate forecasts, demographers..."

In a conditional construction, we need the "would". Look at how it would work in a NON-conditional:

To develop accurate population forecasts, demographers have to know a great deal more...

See how, in that example, without the "more," we're just talking about a fact (how forecasts are developed accurately)? But with the conditional, we need the complete conditional construction, with "would."

Let me know if you have any follow-up questions!

-t

Don't u think that "more accurate" and "accurate" are both conditional??
In both scenarios , It is a condition to achieve something..Can you give some more examples?
[Reveal] Spoiler: OA
If you have any questions
New!
SVP
Joined: 14 Apr 2009
Posts: 2069
Location: New York, NY
Followers: 393

Kudos [?]: 1441 [0], given: 8

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

12 Aug 2013, 11:30
1
This post was
BOOKMARKED
Quote:
I don't find anything incorrect in the main sentence. The answer is D. We can easily eliminate B and C based on the word economical. Can you please help point out what is wrong is the main sentence and how can we correct it?

The beginning of the sentence suggests a hypothetical situation - so we need "would" in the beginning of the answer choice.
"In order to blah...something hypothetical has to happen"

So either (C), (D), or (E).

In (C) "economical" doesn't make sense. Between (D) and (E), (D) work out a lot better. Choose (D).
Intern
Joined: 25 Nov 2013
Posts: 1
Followers: 0

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

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

25 Nov 2013, 20:54
How can we find out that the sentence explains a hypothetical situation? Are there any signal words?
Manager
Joined: 17 Jul 2013
Posts: 104
Followers: 0

Kudos [?]: 6 [0], given: 67

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

31 May 2014, 00:30
yolandaxu wrote:
How can we find out that the sentence explains a hypothetical situation? Are there any signal words?

To identify the hypothetical situation you have to understand the meaning also there is ,in some cases, inclusion of 'if'/'wish' clause that marks the hypothetical situation.
Think is the sentence is talking about an uncertainty (contrary to reality) for example :

If it rains,(then) we will go out -- here IF denotes the conditional occurrence of an event in future on which another event depends which might occur.
Here we used 'will' because the conditional clause is in present tense.

other cases Past and Perfect - uses would and would have respectively.... Other point to note such sentence always uses plural verb form (instead of was -- it will be were) irrespective of the subject
If I were king, I would rule the world.
If I had two cars, I would have never own a bicycle.

"would" is generally used for the refer future in the past.
Current Student
Joined: 02 Jul 2012
Posts: 213
Location: India
Schools: IIMC (A)
GMAT 1: 720 Q50 V38
GPA: 2.6
WE: Information Technology (Consulting)
Followers: 15

Kudos [?]: 253 [1] , given: 84

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

20 Sep 2014, 08:07
1
KUDOS
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic - Since it is a hypothetical situation, a conditional clause must be used. Economic is correct
B. have to know a great deal more than they do now about the social and economical - Hypothetical Situation + Economical is wrong
C. would have to know a great deal more than they do now about the social and economical - Would Have is correct. Economical is wrong.
D. would have to know a great deal more than they do now about the social and economic - Correct
E. would have to know a great deal more than now about the social and economical - Illogical Comparison between knowledge and Time (Now). Economical is wrong

Economic - Is used to refer to general general economy
Economical is used for cost wise reference. E.g. Product X is economical (not economic)
_________________

Give KUDOS if the post helps you...

Affiliations: Oracle certified java programmer , adobe certified developer
Joined: 14 Jul 2013
Posts: 124
GMAT Date: 02-12-2015
GPA: 3.87
WE: Programming (Telecommunications)
Followers: 1

Kudos [?]: 22 [0], given: 37

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

07 Nov 2014, 03:52
A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical

Bold areas : issues
Highlighted option correct.
_________________

IF IT IS TO BE , IT IS UP TO ME

Intern
Joined: 23 Aug 2015
Posts: 1
Followers: 0

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

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

18 Sep 2015, 11:39
but isnt would is used with past and will is used with present? here we are talking about present right? so will should come in answer but would is there.. kindly please can anyone explain this to me
Jamboree GMAT Instructor
Status: GMAT Expert
Affiliations: Jamboree Education Pvt Ltd
Joined: 15 Jul 2015
Posts: 286
Location: India
Followers: 76

Kudos [?]: 274 [1] , given: 1

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

21 Sep 2015, 02:03
1
KUDOS
Expert's post
"Would" is used for - Uncertainty (meaning wise) and technically "Would" is used in reference to "Past as well as Future tense"

In this question, since population forecasts need to be developed (not yet developed) , there is an element of uncertainty as far as know how of demographers w.r.t social and economic determinants is concerned. That's the reaon "Would" is used.
_________________

Aryama Dutta Saikia
Jamboree Education Pvt. Ltd.

Senior Manager
Joined: 09 Feb 2015
Posts: 309
Location: India
Concentration: Social Entrepreneurship, General Management
GMAT 1: 690 Q49 V34
GPA: 2.8
Followers: 0

Kudos [?]: 4 [0], given: 160

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

07 Jan 2016, 08:29
Does it make sense to have will instead of would?
would the sentence still be right?
Manager
Joined: 09 Nov 2015
Posts: 80
Concentration: Strategy, Technology
WE: Information Technology (Computer Software)
Followers: 0

Kudos [?]: 12 [0], given: 45

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

07 Jan 2016, 10:42
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical
Current Student
Joined: 11 Jan 2015
Posts: 12
GMAT 1: 760 Q49 V45
Followers: 0

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

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

07 Jan 2016, 11:22
goforgmat wrote:
Does it make sense to have will instead of would?
would the sentence still be right?

Nopes. Its the same reason that you used would for your second question. This is a hypothetical situation. We are not sure if one will would into another. Its a speculation. This is a 'hypothetical subjunctive'. Hence, would is better suited.

Ex - It will rain tomorrow - There is a certainity
If I were intelligent, I would score a perfect 800 - I speculate or hypothesize the possibility of scoring 800 if I were intelligent. There is no certainty.
Intern
Joined: 26 Feb 2016
Posts: 24
Followers: 0

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

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

20 Mar 2016, 04:55
TommyWallach wrote:
Hey All,

I got asked about this privately, but I think the same question was asked by mymisc as well. The question is, do we need the "would" here, and why? The issue is that this sentence is a hypothetical/conditional:

To develop more accurate population forecasts

We could reword this as "If we wanted more accurate forecasts, demographers..."

In a conditional construction, we need the "would". Look at how it would work in a NON-conditional:

To develop accurate population forecasts, demographers have to know a great deal more...

See how, in that example, without the "more," we're just talking about a fact (how forecasts are developed accurately)? But with the conditional, we need the complete conditional construction, with "would."

Let me know if you have any follow-up questions!

-t

GmatDestroyer2013 wrote:
yolandaxu wrote:
How can we find out that the sentence explains a hypothetical situation? Are there any signal words?

To identify the hypothetical situation you have to understand the meaning also there is ,in some cases, inclusion of 'if'/'wish' clause that marks the hypothetical situation.
Think is the sentence is talking about an uncertainty (contrary to reality) for example :

If it rains,(then) we will go out -- here IF denotes the conditional occurrence of an event in future on which another event depends which might occur.
Here we used 'will' because the conditional clause is in present tense.

other cases Past and Perfect - uses would and would have respectively.... Other point to note such sentence always uses plural verb form (instead of was -- it will be were) irrespective of the subject
If I were king, I would rule the world.
If I had two cars, I would have never own a bicycle.

"would" is generally used for the refer future in the past.

Is there any clear guideline (eg. "more" as a must-be signal word) in distinguishing between a factual sentence and a hypothetical/conditional situation?
Seriously, I fail to justify why this sentence can't be a factual statement (since it lacks "if"), which makes "would" redundant.
Intern
Joined: 26 Feb 2016
Posts: 24
Followers: 0

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

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

25 Mar 2016, 00:56
Post bump. Still unable to understand this even with extensive reading online. Any taker?

gmatretest wrote:
TommyWallach wrote:
Hey All,

I got asked about this privately, but I think the same question was asked by mymisc as well. The question is, do we need the "would" here, and why? The issue is that this sentence is a hypothetical/conditional:

To develop more accurate population forecasts

We could reword this as "If we wanted more accurate forecasts, demographers..."

In a conditional construction, we need the "would". Look at how it would work in a NON-conditional:

To develop accurate population forecasts, demographers have to know a great deal more...

See how, in that example, without the "more," we're just talking about a fact (how forecasts are developed accurately)? But with the conditional, we need the complete conditional construction, with "would."

Let me know if you have any follow-up questions!

-t

GmatDestroyer2013 wrote:
yolandaxu wrote:
How can we find out that the sentence explains a hypothetical situation? Are there any signal words?

To identify the hypothetical situation you have to understand the meaning also there is ,in some cases, inclusion of 'if'/'wish' clause that marks the hypothetical situation.
Think is the sentence is talking about an uncertainty (contrary to reality) for example :

If it rains,(then) we will go out -- here IF denotes the conditional occurrence of an event in future on which another event depends which might occur.
Here we used 'will' because the conditional clause is in present tense.

other cases Past and Perfect - uses would and would have respectively.... Other point to note such sentence always uses plural verb form (instead of was -- it will be were) irrespective of the subject
If I were king, I would rule the world.
If I had two cars, I would have never own a bicycle.

"would" is generally used for the refer future in the past.

Is there any clear guideline (eg. "more" as a must-be signal word) in distinguishing between a factual sentence and a hypothetical/conditional situation?
Seriously, I fail to justify why this sentence can't be a factual statement (since it lacks "if"), which makes "would" redundant.
Verbal Expert
Joined: 14 Dec 2013
Posts: 3041
Location: Germany
Schools: HHL Leipzig
GMAT 1: 780 Q50 V47
WE: Corporate Finance (Pharmaceuticals and Biotech)
Followers: 513

Kudos [?]: 2261 [4] , given: 22

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

28 Mar 2016, 05:37
4
KUDOS
Expert's post
gmatretest wrote:
Post bump. Still unable to understand this even with extensive reading online. Any taker?

gmatretest wrote:

Is there any clear guideline (eg. "more" as a must-be signal word) in distinguishing between a factual sentence and a hypothetical/conditional situation?
Seriously, I fail to justify why this sentence can't be a factual statement (since it lacks "if"), which makes "would" redundant.

A more accurate population forecast does not exist now. A forecast exists, but it is just as accurate as it is now - it is not more accurate than it is now. Developing a more accurate forecast is a hypothetical situation - it may or may not be possible to develop more accurate forecasts. The outcome depends on another hypothetical situation: the demographers would have to know more. It may or may not be possible for the demographers to know more. Hence the statement is hypothetical and not factual.

However if we already knew that it is possible for the demographers to have more accurate knowledge and in such case more accurate forecasts could be developed, we would not then require "would" - in that case the statement would be factual and grammatically correct without "would". However we do not have a grammatically correct option without "would" ( A wrong - comparison issues , B wrong - use of economical). Hence option D is the best.
Director
Joined: 22 Jun 2014
Posts: 740
Location: United States
Concentration: General Management, Technology
Schools: IIMA , IIMB, ISB
GMAT 1: 540 Q45 V20
GPA: 2.49
WE: Information Technology (Computer Software)
Followers: 14

Kudos [?]: 308 [0], given: 102

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

06 May 2016, 09:07
english_august wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical
_________________

---------------------------------------------------------------
Target - 720-740
http://gmatclub.com/forum/information-on-new-gmat-esr-report-beta-221111.html
http://gmatclub.com/forum/list-of-one-year-full-time-mba-programs-222103.html

Manager
Joined: 24 Jun 2016
Posts: 239
Location: Viet Nam
Schools: Booth '19
GMAT 1: 770 Q60 V60
GPA: 4
Followers: 16

Kudos [?]: 32 [0], given: 5

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

25 Jun 2016, 10:58
The phrase has to use a tense that isn't the present. The comparison has to follow a parallel structure. The impact is economic rather than economical.

All 3 conditions point to one answer choice: D.
_________________

Offering top quality online and offline GMAT tutoring service in Vietnam, Southeast Asia, and worldwide.

$50/hour as of February 2017. http://www.facebook.com/HanoiGMATtutor Senior Manager Joined: 02 Mar 2012 Posts: 368 Schools: Schulich '16 Followers: 4 Kudos [?]: 67 [0], given: 4 Re: To develop more accurate population forecasts, demographers [#permalink] ### Show Tags 25 Jun 2016, 11:24 this question is way to easy to get the correct choice, for developing forecasts demographers WOULD have to know, not HAVE to. eliminate A and B next problem is social and economic not economical-economical deals with efficiency and economic monetarily . so we need economic. C and E are eliminated .Left with D which is correct Optimus Prep Instructor Joined: 06 Nov 2014 Posts: 1812 Followers: 55 Kudos [?]: 441 [0], given: 22 Re: To develop more accurate population forecasts, demographers [#permalink] ### Show Tags 20 Jul 2016, 21:25 english_august wrote: To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility. A. have to know a great deal more than now about the social and economic B. have to know a great deal more than they do now about the social and economical C. would have to know a great deal more than they do now about the social and economical D. would have to know a great deal more than they do now about the social and economic E. would have to know a great deal more than now about the social and economical Since we are talking about future, there is an uncertainty. hence we need to use would not have. Eliminate options A and B There is a big difference between economical (cheap) and economic (related to money matters) We are talking about economic determinants. Eliminate options C and E Correct Option: D _________________ # Janielle Williams Customer Support Special Offer:$80-100/hr. Online Private Tutoring
GMAT On Demand Course \$299
Free Online Trial Hour

Last edited by OptimusPrepJanielle on 21 Jul 2016, 21:53, edited 1 time in total.
Director
Joined: 04 Jun 2016
Posts: 654
GMAT 1: 750 Q49 V43
Followers: 63

Kudos [?]: 277 [0], given: 36

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

21 Jul 2016, 00:37
english_august wrote:
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical

First of all one should know use of ECONOMICAL is incorrect in this sentence. "ECONOMICAL" means affordable, cheap, not expensive
The correct term to use here would be "ECONOMIC". ECONOMIC means related to money, economics or monetary reasons

Option B,C and E are out because of wrong word "ECONOMICAL"

Option A and D remaining

Since the sentence suggest a future action, "would" is the correct tense

Option A is out because it makes a faulty comparison and is not parallel. Also does not have the correct future tense "would"

Option D is flawless.:- Correct term "Economic" Correct comparison "demographers .... great deal more than they do" and correct future tense "would"

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical
_________________

Posting an answer without an explanation is "GOD COMPLEX". The world doesn't need any more gods. Please explain you answers properly.
FINAL GOODBYE :- 17th SEPTEMBER 2016. .. 16 March 2017 - I am back but for all purposes please consider me semi-retired.

Intern
Joined: 18 Apr 2016
Posts: 9
WE: Engineering (Energy and Utilities)
Followers: 0

Kudos [?]: 0 [0], given: 81

Re: To develop more accurate population forecasts, demographers [#permalink]

### Show Tags

11 Sep 2016, 08:39
To develop more accurate population forecasts, demographers have to know a great deal more than now about the social and economic determinants of fertility.

A. have to know a great deal more than now about the social and economic
B. have to know a great deal more than they do now about the social and economical
C. would have to know a great deal more than they do now about the social and economical
D. would have to know a great deal more than they do now about the social and economic
E. would have to know a great deal more than now about the social and economical
Re: To develop more accurate population forecasts, demographers   [#permalink] 11 Sep 2016, 08:39

Go to page    1   2    Next  [ 26 posts ]

Similar topics Replies Last post
Similar
Topics:
SC - To develop more accurate population forecasts 0 11 Sep 2016, 08:39
To develop more accurate population forecasts, demographers 0 15 Sep 2016, 01:36
To develop more accurate population forecasts, demographers 0 06 Oct 2016, 01:04
12 After more than four decades of research and development, a 31 19 Jan 2017, 00:03
51 To develop more accurate population forecasts, demographers 42 21 May 2017, 12:01
Display posts from previous: Sort by