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
GMATLiveTeach Starts Oct 17
Chris Peckover, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Chris Peckover, 100th-Percentile GMAT Scorer

Oct 17 · Chris Peckover
Sat · 11:00 AM to 2:00 PM ET
Oct 20 · Chris Peckover
Tue, Thu · 8:00 to 10:00 PM ET
Oct 25 · Josh Braslow
Sun · 1:00 to 4:00 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemand 5 seats left Start anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

Logan Thompson
EXECUTIVE ASSESSMENT

Sep 6 to Dec 6, 2026

with Logan Thompson

165+ EA score guarantee
$05-day trial no automatic billing
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 Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget 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
Start free 5-day trial
Read 559 reviewsTarget Test Prep

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

percentage & Number theory

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 62
Joined: Tue Mar 16, 2010 8:27 am
Thanked: 1 times
by raunakrajan » Tue Jul 06, 2010 12:50 pm
When Mrs. T's students answer the bonus question correctly, she awards a bonus. If the base score is between 10 and 99, the bonus is equal to 2 times the tens digit in the base score. The last test Mrs. T scored was between 10 and 99, and the student answered the bonus question correctly. Was the bonus given greater than 17% of the base score?

(1) The base score of the test was between 50 and 90.

(2) Mrs. T added 16 bonus points to the last test she graded.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
Newbie | Next Rank: 10 Posts
Posts: 3
Joined: Sat Jun 19, 2010 2:50 pm

by khondkar » Tue Jul 06, 2010 1:40 pm
raunakrajan wrote:When Mrs. T's students answer the bonus question correctly, she awards a bonus. If the base score is between 10 and 99, the bonus is equal to 2 times the tens digit in the base score. The last test Mrs. T scored was between 10 and 99, and the student answered the bonus question correctly. Was the bonus given greater than 17% of the base score?

(1) The base score of the test was between 50 and 90.

(2) Mrs. T added 16 bonus points to the last test she graded.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 60
Joined: Sun Jan 24, 2010 2:29 pm
Thanked: 3 times

by jeremy8 » Tue Jul 06, 2010 4:07 pm
I think the answer is B).

Statement 1 tells us that the score is between 50 and 90. Taking two extremes, 50 and 59, we see that the bonus on 50 would be 10, which is 20% of 50, so the bonus would be greater than 17% of the base score.

59 would still yield a bonus of 10 on the base score, but 0.17*59 is actually 10.03, so the bonus would not be greater than 17% of the base score, hence INSUFFICIENT, since we can prove both scenarii possible.

Statement 2 basically tells us that the last score was between 80 and 89 included (tens digit 8, times 2), so again we test for extremes.
In the case of 80, 16 points is again 20% of the base score, which is greater than 17% of 80.
In the case of 89, 0.17*89=15.13, so again the bonus is greater than 17% of the base score.

This is enough information to determine that the bonus is greater than 17% of the base score, hence SUFFICIENT, or B).

When the GMAT asks for "is x greater than" kind of questions, it's usually good to test extremes.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 1179
Joined: Sun Apr 11, 2010 9:07 pmFollowed by: 88 members
Location: Milpitas, CA
Thanked: 447 times

by Rahul@gurome » Tue Jul 06, 2010 10:45 pm
Let us assume the base score = 10x + y
Then bonus = 2x
The main question becomes is 2x > 17% of (10x + y) or 0.3x > 0.17y?

(1) 50 < 10x + y < 90. We know that 0 ≤ y ≤ 9 or 0 ≤ 0.17y ≤ 1.53...range of y
So, 5 < x < 9 or 1.5 < 0.3x < 2.7....range of x
From the range of x and y we can say that 0.3x may or may not be greater than 0.17y
So, (1) is NOT SUFFICIENT.

(2) Bonus = 2x = 16, which means x = 8
So, 0.3x = 0.3(8) = 2.4
Since y is the units digit of the base score so y can take the values from 0 to 9. The maximum value of 0.17y = 0.17(9) = 1.53
We can see that 2.4 > 1.53, so 0.3x > 0.17y
So, (2) is SUFFICIENT.

The correct answer is (B).
Rahul Lakhani
Quant Expert
Gurome, Inc.
https://www.GuroMe.com
On MBA sabbatical (at ISB) for 2011-12 - will stay active as time permits
1-800-566-4043 (USA)
+91-99201 32411 (India)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1