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

Redeem
TTP OnDemand GMAT Video Course
Featured Course

Target Test Prep GMAT OnDemand

Scott Woodbury-Stewart’s private virtual classroom — 400 hours of master-class video lessons for the GMAT Focus Edition.

  • 715+ score guarantee — highest in the industry (99th percentile)
  • 52 chapters · 1,500+ lessons · 4,000+ practice questions
  • 400 hours of video · 1,500+ instructor-led HD smartboard lessons
  • 300,000+ students accepted to Harvard, Stanford, Wharton, Booth & Sloan & more
  • 24/7 live support + weekly Zoom office hours with GMAT instructors
  • TTP AI Assist — 24/7 AI-powered virtual tutor for instant help
  • 1,200+ flashcards + AI-powered study assistant & daily calendar
  • OnDemand, LiveTeach & GMAT Bootcamp formats available
  • Also: GRE, SAT Math & Executive Assessment courses
  • MBA Admissions Consulting now available
  • 🏆 2025 EdTech Breakthrough Award: Test Prep Solution Provider of the Year
  • 200,000+ students served
  • 5-day free trial — $0 to start, no auto-billing, cancel anytime
★★★★★ 5.0 (559 reviews)
130-pt guarantee
$0 to start then $127/mo
Start Free 5-Day Trial Read 559 Reviews →

DS Question

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 83
Joined: Sat Feb 26, 2011 11:22 amFollowed by: 1 member
Thanked: 1 times
by MI3 » Tue Jul 05, 2011 9:18 pm
Q: Of the 60 animals on a certain farm, 2/3 are either pigs or cows. How many of the animals are cows?
(1) the farm has more than twice as many cows at it has pigs.
(2) the farm has more than 12 pigs.

Unfortunately, I don't have the answer to the above problem. Experts out there please opine on how to resolve the problem.

Many Thanks,
M.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members
Location: Milpitas, CA
Thanked: 1854 times
GMAT Score:770

by Anurag@Gurome » Tue Jul 05, 2011 9:48 pm
MI3 wrote:Q: Of the 60 animals on a certain farm, 2/3 are either pigs or cows. How many of the animals are cows?
(1) the farm has more than twice as many cows at it has pigs.
(2) the farm has more than 12 pigs.
Say, number of cows = C and number of pigs = P
Hence, (C + P) = (2/3)*60 = 40

Statement 1: C > 2P
C ≥ 27 and P ≤ 13.

Not sufficient

Statement 2: P > 12
Therefore, C < 28

Not sufficient

1 & 2 Together: C = 27 and P = 13

Sufficient

The correct answer is C.
Last edited by Anurag@Gurome on Tue Jul 05, 2011 10:01 pm, edited 1 time in total.
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Master | Next Rank: 500 Posts
Posts: 461
Joined: Tue May 10, 2011 9:09 amFollowed by: 3 members
Location: pune
Thanked: 36 times

by amit2k9 » Tue Jul 05, 2011 9:49 pm
number of pigs and cows = p+c = 40

a c> 2p so we take c= 3p giving p=10 and c=30

also, c=4p, giving p=8 and c=32. not sufficient.

b p>12 means p=13 giving c= 27 or p= 14 meaning c= 26. not sufficient.

a+b

p>12 so we take p=13 meaning c=27. as c>2p
for p=14 meaning c=29 gives p+c > 40.

thus C is sufficient.
For Understanding Sustainability,Green Businesses and Social Entrepreneurship visit -https://aamthoughts.blocked/
(Featured Best Green Site Worldwide-https://bloggers.com/green/popular/page2)
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 83
Joined: Sat Feb 26, 2011 11:22 amFollowed by: 1 member
Thanked: 1 times

by MI3 » Tue Jul 05, 2011 9:54 pm
Hello Anurag,

Thank you for the explanation..What I am still not clear on, is the first statement which states "the farm has more than twice as many cows at it has pigs".

My interpretation of this was C > 2P rather than C ≥ 2P, am I reading it all wrong?
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 3835
Joined: Fri Apr 02, 2010 10:00 pmFollowed by: 523 members
Location: Milpitas, CA
Thanked: 1854 times
GMAT Score:770

by Anurag@Gurome » Tue Jul 05, 2011 10:11 pm
MI3 wrote:My interpretation of this was C > 2P rather than C ≥ 2P, am I reading it all wrong?
Sorry that was a typo. Edited it.

C > 2P --> C + P > 3P --> 3P < 40 --> P < 40/3 --> P ≤ 13 --> C ≥ 27
Anurag Mairal, Ph.D., MBA
GMAT Expert, Admissions and Career Guidance
Gurome, Inc.
1-800-566-4043 (USA)

Join Our Facebook Groups
GMAT with Gurome
https://www.facebook.com/groups/272466352793633/
Admissions with Gurome
https://www.facebook.com/groups/461459690536574/
Career Advising with Gurome
https://www.facebook.com/groups/360435787349781/
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1