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 →

Perimeter

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
User avatar
Legendary Member
Posts: 1132
Joined: Mon Jul 20, 2009 3:38 amFollowed by: 6 members
Location: India
Thanked: 64 times
GMAT Score:760
by harsh.champ » Fri Feb 05, 2010 5:51 am
The length of the side AB, BC and AC of a triangle ABC are 7, y and 17 respectively (y is an integer). What is the difference between the maximum and minimum possible perimeter of the triangle ABC?

(A). 9 m
(B) 10 m
(C). 11 m
(D). 12 m
(E). 13 m

The ans is D.
Seeking help regarding problem approach!!
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Senior | Next Rank: 100 Posts
Posts: 90
Joined: Fri Jan 22, 2010 1:10 pmFollowed by: 4 members
Location: New Jersey
Thanked: 13 times
GMAT Score:640

by Mom4MBA » Fri Feb 05, 2010 6:04 am
According to me the answer is 12

for any triangle sum of any 2 sides should is greater than the third one

14>y and
7+y>7 thus y>0

so the maximum value for y=13 , making the perimeter 27
and the minimum value will be y=1 making the perimeter 15

27-15 = 12
Stay focused
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 1275
Joined: Thu Sep 21, 2006 11:13 pmFollowed by: 2 members
Location: Arabian Sea
Thanked: 125 times

by ajith » Fri Feb 05, 2010 6:51 am
harsh.champ wrote:The length of the side AB, BC and AC of a triangle ABC are 7, y and 17 respectively (y is an integer). What is the difference between the maximum and minimum possible perimeter of the triangle ABC?

(A). 9 m
(B) 10 m
(C). 11 m
(D). 12 m
(E). 13 m

The ans is D.
Seeking help regarding problem approach!!
The max possible is when y is the longest side
7+17 >y

y>24
the max possible value is 23

minimum is when 17 is the longest side
y+7 > 17
y>10
y=11 is the minimum

Difference btw min and max = 23-11 =12
Always borrow money from a pessimist, he doesn't expect to be paid back.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1