• Varsity Tutors
    Award-winning private GMAT tutoring
    Register now and save up to $200

    Available with Beat the GMAT members only code

    MORE DETAILS
    Varsity Tutors
  • EMPOWERgmat Slider
    1 Hour Free
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    EMPOWERgmat Slider
  • Veritas Prep
    Free Veritas GMAT Class
    Experience Lesson 1 Live Free

    Available with Beat the GMAT members only code

    MORE DETAILS
    Veritas Prep
  • Economist Test Prep
    Free Trial & Practice Exam
    BEAT THE GMAT EXCLUSIVE

    Available with Beat the GMAT members only code

    MORE DETAILS
    Economist Test Prep
  • Target Test Prep
    5-Day Free Trial
    5-day free, full-access trial TTP Quant

    Available with Beat the GMAT members only code

    MORE DETAILS
    Target Test Prep
  • Magoosh
    Magoosh
    Study with Magoosh GMAT prep

    Available with Beat the GMAT members only code

    MORE DETAILS
    Magoosh
  • PrepScholar GMAT
    5 Day FREE Trial
    Study Smarter, Not Harder

    Available with Beat the GMAT members only code

    MORE DETAILS
    PrepScholar GMAT
  • e-gmat Exclusive Offer
    Get 300+ Practice Questions
    25 Video lessons and 6 Webinars for FREE

    Available with Beat the GMAT members only code

    MORE DETAILS
    e-gmat Exclusive Offer
  • Kaplan Test Prep
    Free Practice Test & Review
    How would you score if you took the GMAT

    Available with Beat the GMAT members only code

    MORE DETAILS
    Kaplan Test Prep

OG CR:Many industrialized nations are trying to

This topic has 1 expert reply and 3 member replies
NandishSS Master | Next Rank: 500 Posts Default Avatar
Joined
05 Jun 2015
Posted:
301 messages
Followed by:
1 members
Upvotes:
3

OG CR:Many industrialized nations are trying to

Post Fri Sep 16, 2016 11:15 pm
Many industrialized nations are trying to reduce atmospheric concentrations of carbon dioxide, a gas released by the burning of fossil fuels. One proposal is to replace conventional cement, which is made with calcium carbonate, by a new “eco-cement.” This new cement, made with magnesium carbonate, absorbs large amount of carbon dioxide when exposed to the atmosphere. Therefore, using eco-cement for new concrete building projects will significantly help reduce atmospheric concentrations of carbon dioxide.

Which of the following, if true, most strengthens the argument?

A) The cost of magnesium carbonate, currently greater than the cost of calcium carbonate, probably will fall as more magnesium carbonate is used in cement manufacture.
B) Eco-cement is strengthened when absorbed carbon dioxide reacts with the cement.
C) Before the development of eco-cement, magnesium-based cement was considered too susceptible to water erosion to be of practical use.
D) The manufacture of eco-cement uses considerably less fossil fuel per unit of cement than the manufacture of conventional cement does.
E) Most building-industry groups are unaware of the development or availability of eco-cement.

OA:D

Source:OG 2017

  • +1 Upvote Post
  • Quote
  • Flag
Thanked by: antuaich
Need free GMAT or MBA advice from an expert? Register for Beat The GMAT now and post your question in these forums!
Top Reply
Post Mon Jun 05, 2017 9:08 am
rsarashi wrote:
Hi Experts ,

How option D can be the answer, D is just comparing between The manufacture of eco-cement and the manufacture of conventional cement.

Please help.

Thanks
We know that the eco-cement has one big advantage over conventional cement: it absorbs Carbon Dioxide. If the goal is reduce the amount of Carbon Dioxide in the atmosphere, all we need to know is that there's no disadvantage in manufacturing the eco-cement. In other words, the only way that using eco-Cement wouldn't be conducive to reducing greenhouse gas would be if manufacturing the eco-Cement produced more Carbon Dioxide than manufacturing conventional cement would. Option D ameliorates this concern.

_________________
Veritas Prep | GMAT Instructor

Veritas Prep Reviews
Save $100 off any live Veritas Prep GMAT Course

  • +1 Upvote Post
  • Quote
  • Flag
Enroll in a Veritas Prep GMAT class completely for FREE. Wondering if a GMAT course is right for you? Attend the first class session of an actual GMAT course, either in-person or live online, and see for yourself why so many students choose to work with Veritas Prep. Find a class now!
rsarashi Master | Next Rank: 500 Posts Default Avatar
Joined
24 Dec 2016
Posted:
186 messages
Followed by:
2 members
Upvotes:
5
Top Reply
Post Sat Jun 03, 2017 6:18 pm
Hi Experts ,

How option D can be the answer, D is just comparing between The manufacture of eco-cement and the manufacture of conventional cement.

Please help.

Thanks

  • +1 Upvote Post
  • Quote
  • Flag
Post Mon Jun 05, 2017 9:08 am
rsarashi wrote:
Hi Experts ,

How option D can be the answer, D is just comparing between The manufacture of eco-cement and the manufacture of conventional cement.

Please help.

Thanks
We know that the eco-cement has one big advantage over conventional cement: it absorbs Carbon Dioxide. If the goal is reduce the amount of Carbon Dioxide in the atmosphere, all we need to know is that there's no disadvantage in manufacturing the eco-cement. In other words, the only way that using eco-Cement wouldn't be conducive to reducing greenhouse gas would be if manufacturing the eco-Cement produced more Carbon Dioxide than manufacturing conventional cement would. Option D ameliorates this concern.

_________________
Veritas Prep | GMAT Instructor

Veritas Prep Reviews
Save $100 off any live Veritas Prep GMAT Course

  • +1 Upvote Post
  • Quote
  • Flag
Enroll in a Veritas Prep GMAT class completely for FREE. Wondering if a GMAT course is right for you? Attend the first class session of an actual GMAT course, either in-person or live online, and see for yourself why so many students choose to work with Veritas Prep. Find a class now!
rsarashi Master | Next Rank: 500 Posts Default Avatar
Joined
24 Dec 2016
Posted:
186 messages
Followed by:
2 members
Upvotes:
5
Post Sat Jun 03, 2017 6:18 pm
Hi Experts ,

How option D can be the answer, D is just comparing between The manufacture of eco-cement and the manufacture of conventional cement.

Please help.

Thanks

  • +1 Upvote Post
  • Quote
  • Flag

Best Conversation Starters

1 lheiannie07 116 topics
2 LUANDATO 67 topics
3 swerve 66 topics
4 ardz24 61 topics
5 AAPL 59 topics
See More Top Beat The GMAT Members...

Most Active Experts

1 image description Scott@TargetTestPrep

Target Test Prep

213 posts
2 image description Brent@GMATPrepNow

GMAT Prep Now Teacher

177 posts
3 image description Jeff@TargetTestPrep

Target Test Prep

168 posts
4 image description Rich.C@EMPOWERgma...

EMPOWERgmat

133 posts
5 image description GMATGuruNY

The Princeton Review Teacher

126 posts
See More Top Beat The GMAT Experts