BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

★★★★★5.0559 reviews
Vote for Target Test Prep, Newsweek Readers’ Choice Awards 2026
NEWSWEEK READERS’ CHOICE 2026

BIG NEWS! Target Test Prep has been nominated, and they’d love your vote!

TTP has worked incredibly hard to build the best test prep experience possible, and winning Newsweek’s 2026 Readers’ Choice Award for Best Test Prep would mean a lot to them. If TTP has helped you, they’d be incredibly grateful for your vote. You can vote once each day through September 9.

Vote for TTP
GMATLiveTeach 7 seats left
Chris Peckover
NEXT LIVE COHORT

Oct 13 to Jan 7, 2027

with Chris Peckover

Schedule
Tue, Thu · 8:00 to 10:00 PM ET
Included
40 live hours + 6 months of GMAT OnDemand
  • Live instruction and real-time questions
  • Class recordings and assigned practice
View class & enroll
Limited cohort · enrollment openTarget Test Prep
EALiveTeach 5 seats left
Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

Schedule
Sun · 9:30 AM to 12:30 PM ET
Included
Live EA class + 6 months of EA OnDemand
  • Expert-led weekly online sessions
  • EA Masterclass access between classes
View EA class & enroll
Limited cohort · enrollment openTarget Test Prep
GMATOnDemand Start anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

Compare the format, schedule, and included access before enrolling. Prices and seat counts shown reflect the supplied offer details.

Stumped on relative quantity comparison question

Expert replies
by jlaipple » Thu Nov 12, 2009 9:36 am
Providing initial evidence that airports are a larger source of pollution than they were once believed to be, environmentalists in Chicago reported that the total amount of pollutant emitted annually by vehicles at O'Hare International Airport is twice as much as that which is being emitted annually by all motor vehicles in the Chicago metropolitan area.

as much as that which is being emitted annually by all
as much annually as is emited by the
as much compared to what is annually emitted by all
that emitted annually by all
that emitted annually compared to the

Correct answer and my problem with it:


[spoiler]The correct answer is D. I chose A here. D is clearly the most concise and A uses some passive voice which I normally would rule out. My problem is we are comparing relative quantities here and should use 'as much as' right? Why is 'that' ok here?[/spoiler]
Last edited by jlaipple on Thu Nov 12, 2009 12:46 pm, edited 1 time in total.
Join the discussion
Source: — Sentence Correction |

by GMATBootcamp » Thu Nov 12, 2009 12:46 pm
The other answer choices were eliminated for a variety of other reasons. My reasoning is as follows:

A: incorrect. Due to the use of "which is being." We generally want to limit the number of "to be" verbs, and here we have two used in sequence - "is" and "being"

B: incorrect. The placement of "annually" no longer describes "emitted"

C: incorrect. Unidiomatic. The correct idiom is "twice as much as" or simply "twice," not "twice as much compared to." "Compared to what is" is also not concise

D: correct

E: incorrect. Redundancy error. You don't need "compared to" again


HTH!
Paul

Focused GMAT Preparation
www.thegmatbootcamp.com
Join the discussion

by jlaipple » Mon Nov 16, 2009 9:38 am
I appreciate your analysis of all the answers... I agree with everything except you don't have an explanation of why D is correct. It may be the least incorrect, but why is it correct? As i stated in the original post, I don't understand why we are comparing relative quantities and don't have to use 'as much as', which is the correct idiom as I understand it, and can use 'that'.
Join the discussion

by GMATBootcamp » Mon Nov 16, 2009 12:33 pm
I'm not quite understanding what you mean by "relative quantities."

In GMAT english, we need to compare apples to apples, oranges to oranges.

In the given example,
the total amount of pollutant emitted annually by vehicles at O'hare International Airport is twice as much as that which is being emitted annually by all.

The two items being compared are the amount of pollution emitted by vehicles from the airport, and the amount of pollution being emitted annually. The word "that" or some other type of pronoun or noun is required to indicate that we are correctly comparing two levels of pollution.

All of the answer choices given fulfill this comparison requirement.

To answer your second question, the use of the word "twice" already implies XX is two times the amount of YY. Using "as much as" is redundant.
Paul

Focused GMAT Preparation
www.thegmatbootcamp.com
Join the discussion

by OGMATTERS » Sun Nov 22, 2009 7:24 pm
Given two choices for this SC answer.

A: that which is being = kill it and choose B. Don't even read B to save time.

If you see that which is being it is most likely incorrect.

Generally, which should follow a comma or a preposition.
Please use the underline and spoiler buttons when posting SC questions.
Join the discussion

• Page 1 of 1