Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
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.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 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
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
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
GMATOnDemandStart 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

3 Ratio Problems

Expert replies
by TeddyBonham » Sat Mar 28, 2015 2:30 am
The ratio of black rabbits to white rabbits in the hat magician Uri Geller was 7:9. After he turned 3 of the black rabbits to white rabbits the two quantities were equal. What was the original total number of rabbits?

A) 20 (B) 32 (C) 48 (D) 64 (E) 90


The ratio of statues to paintings in Ann's villa was 3:10. After 30 paintings were stolen from Ann's house the ratio of statues to paintings became 12:25. What was the original number of statues in Ann's house?

(A) 18 (B) 24 (C) 30 (D) 48 (E) 80


In Erica's garden the ratio of purple tulips to red tulips is 3:5, and the ratio of white roses to yellow roses is 2:3. If the number of white roses in Erica's garden is twice the number of purple tulips, what is the ratio of yellow roses to red tulips?

(A) 5:1 (B) 10:1 (C) 2:7 (D) 9:5 (E) 4:9

[/list]
Join the discussion
Source: — Problem Solving |

by GMATGuruNY » Sat Mar 28, 2015 3:36 am
Please post each problem in a separate thread.
I believe that the first problem should read as follows:
TeddyBonham wrote:The ratio of black rabbits to white rabbits in the hat of magician Uri Geller was 7:9. After he turned 3 of the white rabbits to black rabbits, the two quantities were equal. What was the original total number of rabbits?

A) 20 (B) 32 (C) 48 (D) 64 (E) 90
Since the number of rabbits switching from white to black is small, the total number of rabbits must also be small.

Strategy:
TEST small values such that B:W = 7:9.
Options:
B=7, W=9
B=14, W=18
B=21, W=27.
Use this list to calculate options for the next statement.

After he turned 3 of the white rabbits to black rabbits the two quantities were equal.
New B = 7+3 = 10, new W = 9-3 = 6.
New B = 14+3 = 17, new W = 18-3 = 15.
New B = 21+3 = 24, new W = 27-3 = 24.

The option in red works.
Thus:
Original total = 21+27 = 48.

The correct answer is C.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3
Join the discussion

by DavidG@VeritasPrep » Sun Mar 29, 2015 6:47 am
The ratio of black rabbits to white rabbits in the hat of magician Uri Geller was 7:9. After he turned 3 of the white rabbits to black rabbits, the two quantities were equal. What was the original total number of rabbits?

A) 20 (B) 32 (C) 48 (D) 64 (E) 90
And there's always good 'ol algebra.

Initially:

Black: 7x
White: 9x
Total: 16x


If 3 white rabbits are turned black, our new scenario will be

Black: 7x+3
White: 9x -3

We're told the two quantities above are equal.
7x + 3 = 9x - 3
6= 2x
3 = x

16x = 16*3 = 48
Veritas Prep | GMAT Instructor

Veritas Prep Reviews
Save $100 off any live Veritas Prep GMAT Course
Join the discussion