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

It is currently 21 Sep 2014, 04:46

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

Photovoltaic power plants produce electricity from sunlight.

  Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
TAGS:
1 KUDOS received
Senior Manager
Senior Manager
User avatar
Joined: 16 Jan 2009
Posts: 362
Concentration: Technology, Marketing
GMAT 1: 700 Q50 V34
GPA: 3
WE: Sales (Telecommunications)
Followers: 2

Kudos [?]: 68 [1] , given: 16

GMAT Tests User
Photovoltaic power plants produce electricity from sunlight. [#permalink] New post 20 Sep 2009, 05:55
1
This post received
KUDOS
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

25% (02:42) correct 75% (01:06) wrong based on 5 sessions
Photovoltaic power plants produce electricity from sunlight. As a result of astonishing recent technological advances, the cost of producing electric power at photovoltaic power plants, allowing for both construction and operating costs, is one-tenth of what it was 20 years ago, whereas the corresponding cost for traditional plants, which burn fossil fuels, has increased. Thus, photovoltaic power plants offer a less expensive approach to meeting demand for electricity than do traditional power plants.

The conclusion of the argument is properly drawn if which one of the following is assumed?
(A) The cost of producing electric power at traditional plants has increased over the past 20 years.
(B) Twenty years ago, traditional power plants were producing 10 times more electric power than were photovoltaic plants.
(C) None of the recent technological advances in producing electric power at photovoltaic plants can be applied to producing power at traditional plants.
(D) Twenty years ago, the cost of producing electric power at photovoltaic plants was less than 10 times the cost of producing power at traditional plants.
(E) The cost of producing electric power at photovoltaic plants is expected to decrease further, while the cost of producing power at traditional plants is not expected to decrease.
_________________

Lahoosaher


Last edited by lahoosaher on 21 Sep 2009, 13:19, edited 1 time in total.
Manager
Manager
User avatar
Joined: 01 Sep 2009
Posts: 65
Followers: 1

Kudos [?]: 16 [0], given: 3

Re: CR : Photovoltaic power plants [#permalink] New post 20 Sep 2009, 10:19
D IMO. It says that PPP (Photovoltaic Power Plants) cost is decreased to 1/10 of what it was 20 years ago and TPP (Traditional Power Plant) cost has increased. Now what if PPP was like 100 bucks 20 yrs back and now it is 10 bucks. However TPP was 1 buck 20 yrs back and 5 bucks now. Still PPP is decreasing and TPP is increasing but TPP is still less expansive approach. So we need an assumption to prove that PPP is now less expansive than TPP.

amolsk11 wrote:
Photovoltaic power plants produce electricity from sunlight. As a result of astonishing recent technological advances, the cost of producing electric power at photovoltaic power plants, allowing for both construction and operating costs, is one-tenth of what it was 20 years ago, whereas the corresponding cost for traditional plants, which burn fossil fuels, has increased. Thus, photovoltaic power plants offer a less expensive approach to meeting demand for electricity than do traditional power plants.

The conclusion of the argument is properly drawn if which one of the following is assumed?
(A) The cost of producing electric power at traditional plants has increased over the past 20 years.
--> As per the reasoning given in my explanation, PPP can still be cheaper. So this statement doesn't help.
(B) Twenty years ago, traditional power plants were producing 10 times more electric power than were photovoltaic plants.
--> More electric power is not in question. So out of scope.
(C) None of the recent technological advances in producing electric power at photovoltaic plants can be applied to producing power at traditional plants.
--> Out of scope.
(D) Twenty years ago, the cost of producing electric power at photovoltaic plants was less than 20 times the cost of producing power at traditional plants.
--> 20 yrs before PPP was less than 1/20 of TPP. And TPP is increasing while PPP is decreasing. So it means that PPP is definitely less expansive than TPP. This is the assumption which helps building the argument.
(E) The cost of producing electric power at photovoltaic plants is expected to decrease further, while the cost of producing power at traditional plants is not expected to decrease.
--> Out of Scope. It does not also tell how much it is expected to decrease.
1 KUDOS received
Manager
Manager
User avatar
Joined: 23 Jun 2009
Posts: 155
Followers: 1

Kudos [?]: 8 [1] , given: 9

GMAT Tests User
Re: CR : Photovoltaic power plants [#permalink] New post 20 Sep 2009, 13:32
1
This post received
KUDOS
IMO "C". The argument falls apart if the advances in technology can help reduce costs for traditional plants.What is the OA?
Senior Manager
Senior Manager
User avatar
Joined: 16 Jan 2009
Posts: 362
Concentration: Technology, Marketing
GMAT 1: 700 Q50 V34
GPA: 3
WE: Sales (Telecommunications)
Followers: 2

Kudos [?]: 68 [0], given: 16

GMAT Tests User
Re: CR : Photovoltaic power plants [#permalink] New post 21 Sep 2009, 12:25
perfect riteshbindal.
OA D
_________________

Lahoosaher

1 KUDOS received
Director
Director
avatar
Joined: 05 Jun 2009
Posts: 852
WE 1: 7years (Financial Services - Consultant, BA)
Followers: 8

Kudos [?]: 182 [1] , given: 106

GMAT Tests User
Re: CR : Photovoltaic power plants [#permalink] New post 21 Sep 2009, 12:50
1
This post received
KUDOS
Question is posted wrong:
D choice in original question states : 10 times not 20 times.
Please correct the question
Reference: Q5 of http://www.lsac.org/pdfs/LSATPreparationweb.pdf

@ritesh:

As per the posted question

D suggests,
20 years ago, PPP(old) < 20 * TPP(old) [* not 1/20 times ]

PPP(now)=1/10th of PPP(old) < 2 * TPP(old)

==> From this, we can't infer that PPP(new) < TPP(new)

as there is no relationship suggesting that TPP(new) > 2 * TPP(old)
_________________

Consider kudos for the good post ... :beer
My debrief : journey-670-to-720-q50-v36-long-85083.html

Senior Manager
Senior Manager
User avatar
Joined: 16 Jan 2009
Posts: 362
Concentration: Technology, Marketing
GMAT 1: 700 Q50 V34
GPA: 3
WE: Sales (Telecommunications)
Followers: 2

Kudos [?]: 68 [0], given: 16

GMAT Tests User
Re: CR : Photovoltaic power plants [#permalink] New post 21 Sep 2009, 13:18
sudeep wrote:
Question is posted wrong:
D choice in original question states : 10 times not 20 times.
Please correct the question
Reference: Q5 of http://www.lsac.org/pdfs/LSATPreparationweb.pdf

@ritesh:

As per the posted question

D suggests,
20 years ago, PPP(old) < 20 * TPP(old) [* not 1/20 times ]

PPP(now)=1/10th of PPP(old) < 2 * TPP(old)

==> From this, we can't infer that PPP(new) < TPP(new)

as there is no relationship suggesting that TPP(new) > 2 * TPP(old)


Thanks a lot for pointing that out Sudeep.
You are right.

I will correct the question.
_________________

Lahoosaher

Manager
Manager
User avatar
Joined: 01 Sep 2009
Posts: 65
Followers: 1

Kudos [?]: 16 [0], given: 3

Re: CR : Photovoltaic power plants [#permalink] New post 21 Sep 2009, 18:36
After the correction also D will be correct. 1/10 (less than 10 times) will be less than the TPP's current price :-)
1 KUDOS received
Director
Director
User avatar
Joined: 24 Aug 2007
Posts: 956
WE 1: 3.5 yrs IT
WE 2: 2.5 yrs Retail chain
Followers: 54

Kudos [?]: 711 [1] , given: 40

GMAT Tests User
Re: CR : Photovoltaic power plants [#permalink] New post 07 May 2010, 05:12
1
This post received
KUDOS
Lets take another case:
PPP 100 (earlier) >>>>>> 10 (now)
TPP 5 (earlier) >>>>>> 11 (now)

But, this case is not matching D. Can you please check where I am missing?

amolsk11 wrote:
Photovoltaic power plants produce electricity from sunlight. As a result of astonishing recent technological advances, the cost of producing electric power at photovoltaic power plants, allowing for both construction and operating costs, is one-tenth of what it was 20 years ago, whereas the corresponding cost for traditional plants, which burn fossil fuels, has increased. Thus, photovoltaic power plants offer a less expensive approach to meeting demand for electricity than do traditional power plants.

The conclusion of the argument is properly drawn if which one of the following is assumed?
(A) The cost of producing electric power at traditional plants has increased over the past 20 years.
(B) Twenty years ago, traditional power plants were producing 10 times more electric power than were photovoltaic plants.
(C) None of the recent technological advances in producing electric power at photovoltaic plants can be applied to producing power at traditional plants.
(D) Twenty years ago, the cost of producing electric power at photovoltaic plants was less than 10 times the cost of producing power at traditional plants.
(E) The cost of producing electric power at photovoltaic plants is expected to decrease further, while the cost of producing power at traditional plants is not expected to decrease.

_________________

Want to improve your CR: cr-methods-an-approach-to-find-the-best-answers-93146.html
Tricky Quant problems: 50-tricky-questions-92834.html
Important Grammer Fundamentals: key-fundamentals-of-grammer-our-crucial-learnings-on-sc-93659.html

Re: CR : Photovoltaic power plants   [#permalink] 07 May 2010, 05:12
    Similar topics Author Replies Last post
Similar
Topics:
3 Experts publish their posts in the topic Photovoltaic power plants produce electricity from sunlight. az780 20 15 Feb 2008, 14:02
Photovoltaic power plants produce electricity from sunlight. AK47 6 27 Jan 2007, 01:09
Photovoltaic power plants produce electricity from sunlight. jyotsnasarabu 11 17 Nov 2006, 03:30
Photovoltaic power plants produce electricity from sunlight. remgeo 18 18 May 2006, 07:02
Photovoltaic power plants produce electricity from sunlight. harshi 24 11 Mar 2005, 14:45
Display posts from previous: Sort by

Photovoltaic power plants produce electricity from sunlight.

  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®.