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# demographers

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Manager
Joined: 16 May 2007
Posts: 144
Followers: 1

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

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24 Sep 2007, 20:46
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
If you have any questions
New!
CEO
Joined: 29 Mar 2007
Posts: 2562
Followers: 21

Kudos [?]: 453 [0], given: 0

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24 Sep 2007, 21:51
cruiser 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

D. need use of "would" here.

C, E: use of economical is incorrect.
Director
Joined: 11 Jun 2007
Posts: 921
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24 Sep 2007, 22:06
cruiser 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

this is describing a hypothetical condition (if demographers were to develop more accurate forecasts), so "would" should be used over present perfect tense. this eliminates A and B

next, we see the split between C, D, and E
economic and economical have two different meanings, economical is used incorrectly in this sentence

economic complementary to social whereas economical is being frugal (doesn't make sense in this context)

so leaves D for the answer
GMAT Club Legend
Joined: 07 Jul 2004
Posts: 5045
Location: Singapore
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24 Sep 2007, 22:49
'would have' is correct -> C,D and E left
'than do now' is correct -> C and D left
'economical' is wrong -> D is the correct answer.
Manager
Joined: 16 May 2007
Posts: 144
Followers: 1

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

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25 Sep 2007, 05:50
cruiser 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

I also picked D thinking "economical" is wrong.
But the OA is E.

May be OA is wrong...
VP
Joined: 15 Jul 2004
Posts: 1457
Schools: Wharton (R2 - submitted); HBS (R2 - submitted); IIMA (admitted for 1 year PGPX)
Followers: 22

Kudos [?]: 195 [0], given: 13

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25 Sep 2007, 07:09
cruiser wrote:
cruiser 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

I also picked D thinking "economical" is wrong.
But the OA is E.

May be OA is wrong...

E cannot be .. it's Impossible....
Re: demographers   [#permalink] 25 Sep 2007, 07:09
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