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 →

Set problem

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
User avatar
GMAT Instructor
Posts: 15539
Joined: Tue May 25, 2010 12:04 pmFollowed by: 1906 members
Location: New York, NY
Thanked: 13060 times
GMAT Score:790

by GMATGuruNY » Fri Mar 04, 2011 2:16 pm
garuhape wrote:This one seems easy but it really is tricky. Can someone please explain the solution to me?

Image

Thanks Guys!
We can plug in the answer choices, which represent the number who own both types of cars.

Answer choice C: 7 own both types of cars.
Since total Fords = 16, 16-7 = 9 own only Fords.
Since total Toyotas = 11, 11-7 = 4 own only Toyotas.
Total who own only 1 type of car = 9+4 = 13.
Doesn't work. Eliminate C.

Since just a few more must own only 1 type of car, slightly fewer must own both.

The correct answer is B.

Answer choice B: 6 own both types of cars.
Since total Fords = 16, 16-6 = 10 own only Fords.
Since total Toyotas = 11, 11-6 = 5 own only Toyotas.
Total who own only 1 type of car = 10+5 = 15. Success!
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
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Legendary Member
Posts: 586
Joined: Tue Jan 19, 2010 4:38 amFollowed by: 5 members
Thanked: 31 times
GMAT Score:730

by rohu27 » Sat Mar 05, 2011 7:49 am
let x be the no. of people who own both ford nd toyota (lucky :D)
only F+only T= 15
16-x+11-x=15 (people who own ford-who own both=people who own only ford, same applies to toyota)
on solving x=6.

option B

i liked Mitch's solution though.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1