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 →

a,b,c

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Legendary Member
Posts: 1022
Joined: Mon Jul 20, 2009 11:49 pmFollowed by: 2 members
Location: Gandhinagar
Thanked: 41 times
by shashank.ism » Tue Feb 09, 2010 7:20 am
Let a, b, c be positive reals. (I) and (II) are independent statements.

(I) Minimum value of a^3/4b + b/8c^2 + (1+c)/2a is p
(II) a + b + 2c = 8 and a^2 + b^2 + 2c^2 = 25. Maximum possible value of c is q.

Then which among the following is |p-q|?
5/2
9/4
1/2
3/8
none of these
My Websites:
www.mba.webmaggu.com - India's social Network for MBA Aspirants

www.deal.webmaggu.com -India's online discount, coupon, free stuff informer.

www.dictionary.webmaggu.com - A compact free online dictionary with images.

Nothing is Impossible, even Impossible says I'm possible.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 293
Joined: Thu Jan 14, 2010 9:08 amFollowed by: 5 members
Location: India
Thanked: 36 times
GMAT Score:730

by mohit11 » Wed Mar 10, 2010 10:06 pm
I'd say 3/8

Tough question, definitely not solvable in 2 mins !!

I substituted a,b,c as 1, equation one gives ..11/8

from equation 2, C should be 1

P-Q = 11/8 - 1 = 3/8

I know my answer is probably correct, but i don't really have the right reasoning. Very interested to know the trick to solve this question.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
GMAT Instructor
Posts: 3225
Joined: Tue Jan 08, 2008 2:40 pmFollowed by: 614 members
Location: Toronto
Thanked: 1710 times
GMAT Score:800

by Stuart@KaplanGMAT » Thu Mar 11, 2010 12:30 am
mohit11 wrote:I'd say 3/8

Tough question, definitely not solvable in 2 mins !!

I substituted a,b,c as 1, equation one gives ..11/8

from equation 2, C should be 1

P-Q = 11/8 - 1 = 3/8

I know my answer is probably correct, but i don't really have the right reasoning. Very interested to know the trick to solve this question.
This is 100% not a real GMAT question; the language used isn't what you'd see on the actual exam. Don't worry about solving it in under 2 minutes.
Image

Stuart Kovinsky | Kaplan GMAT Faculty | Toronto

Kaplan Exclusive: The Official Test Day Experience | Ready to Take a Free Practice Test? | Kaplan/Beat the GMAT Member Discount
BTG100 for $100 off a full course
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Senior | Next Rank: 100 Posts
Posts: 43
Joined: Sat Mar 13, 2010 4:11 am
Thanked: 1 times

by STEVEN SPIELBERG » Sat Mar 13, 2010 11:20 am
What's the OA and source ?
I want to win an OSCAR on the GMAT !!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1