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
GMATBootcamp Starts Sep 28
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE BOOTCAMP

Live Online Bootcamp Class with Top GMAT Expert Chris Peckover

15 live classes from Sep 28, 2026

Schedule
Mon to Fri · 7:00 to 10:00 PM ET
Included
Live classes + 6 months of TTP OnDemand
  • Boost your GMAT score in less than one month in a live online class
  • 6 months access to TTP OnDemand video courses included
View bootcamp & 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
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
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.

hard question!

Expert replies
by bupbebeo » Tue Apr 13, 2010 4:19 am
Ditrama is a federation made up of three autonomous regions. Korva, Mitro, and Guadar. Under the federal revenue-sharing plan, each region receives a share of federal revenues equal to the share of the total population of Ditrama residing in that region, as shown by a yearly population survey. Last year, the percentage of federal revenues Korva received for its share decreased somewhat even though the population survey on which the revenue-sharing was based showed that Korva's population had increased.

If the statements above are true, which one of the following must also have been shown by the population survey on which last year's revenue-sharing in Ditrama was based?

A. Of the three regions, Korva had the smallest number of residents.
B. The population of Korva grew by a smaller percentage than it did in previous years.
C. the populations of Mitro and Guadar each increased by a percentage that exceeded the percentage by which the population of Korva increased.
D. Of teh three regions, Korva's numerical increase in Population was the smallest
E. Korva's population grew by a smaller percentage than did the population of at least one of the other two autonomous region.
Join the discussion
Source: — Critical Reasoning |

by kevincanspain » Tue Apr 13, 2010 4:27 am
If E were false, then K's share of the population could have have fallen and thus nor could its share of the revenues. Since its share did fall, E must be true.

Nice question, what is the source?
Kevin Armstrong
GMAT Instructor
Gmatclasses
Madrid
Join the discussion

by CrazyGmatter » Tue Apr 13, 2010 5:18 am
@kevin..

I chose D...Can u please elaborate on why you chose E..
Join the discussion

by kevincanspain » Tue Apr 13, 2010 6:11 am
bupbebeo wrote:Ditrama is a federation made up of three autonomous regions. Korva, Mitro, and Guadar. Under the federal revenue-sharing plan, each region receives a share of federal revenues equal to the share of the total population of Ditrama residing in that region, as shown by a yearly population survey. Last year, the percentage of federal revenues Korva received for its share decreased somewhat even though the population survey on which the revenue-sharing was based showed that Korva's population had increased.

If the statements above are true, which one of the following must also have been shown by the population survey on which last year's revenue-sharing in Ditrama was based?

A. Of the three regions, Korva had the smallest number of residents.
B. The population of Korva grew by a smaller percentage than it did in previous years.
C. the populations of Mitro and Guadar each increased by a percentage that exceeded the percentage by which the population of Korva increased.
D. Of teh three regions, Korva's numerical increase in Population was the smallest
E. Korva's population grew by a smaller percentage than did the population of at least one of the other two autonomous region.
The information presented in the text might seem contradictory.

On the one hand, each region receives a share of revenues equal to the share of the total population of Ditrama residing in that region.
On the other hand, Korva's population increased (according to the offical survey).

How could both be true? The population of K, but not its share of the total, has increased. For this to happen, it must be that at least one of the other regions saw a greater percentage increase in population. D need not be true, as we are talking about percentages, not absolute figures. If K's population were larger than that of the other two regions combined, D could easily be false
Kevin Armstrong
GMAT Instructor
Gmatclasses
Madrid
Join the discussion

by kevincanspain » Tue Apr 13, 2010 6:40 am
Nor can we conclude that K's population increase was the smallest in percentage terms, as C indicates. We only know that it cannot be the largest in %terms

For example

Last This
K 100 110 (from 40% to about 30% of total)
M 100 105
G 200 500
Kevin Armstrong
GMAT Instructor
Gmatclasses
Madrid
Join the discussion

by harshavardhanc » Tue Apr 13, 2010 10:01 am
bupbebeo wrote:Ditrama is a federation made up of three autonomous regions. Korva, Mitro, and Guadar. Under the federal revenue-sharing plan, each region receives a share of federal revenues equal to the share of the total population of Ditrama residing in that region, as shown by a yearly population survey. Last year, the percentage of federal revenues Korva received for its share decreased somewhat even though the population survey on which the revenue-sharing was based showed that Korva's population had increased.

If the statements above are true, which one of the following must also have been shown by the population survey on which last year's revenue-sharing in Ditrama was based?

A. Of the three regions, Korva had the smallest number of residents.
B. The population of Korva grew by a smaller percentage than it did in previous years.
C. the populations of Mitro and Guadar each increased by a percentage that exceeded the percentage by which the population of Korva increased.
D. Of teh three regions, Korva's numerical increase in Population was the smallest
E. Korva's population grew by a smaller percentage than did the population of at least one of the other two autonomous region.
https://www.beatthegmat.com/ditrama-popu ... 50545.html
Regards,
Harsha
Join the discussion

by deepesh.gupta » Sat Apr 17, 2010 4:42 am
Hi KEvin,

I opted for C becase that only gives 100% gaurantee that K's share in revenue would decrease. While in E, the lower increase in one can offset the higher increase in other, keeping the K's share same or even more. Could you please elaborate on why C is wrong.

BTW, what is OA?

kevincanspain wrote:Nor can we conclude that K's population increase was the smallest in percentage terms, as C indicates. We only know that it cannot be the largest in %terms

For example

Last This
K 100 110 (from 40% to about 30% of total)
M 100 105
G 200 500
Join the discussion