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
Start free 5-day trial
Read 563 reviewsTarget Test Prep

mean (probabiltity)

Problem Solving — algebra and arithmetic
Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 61
Joined: Mon Feb 14, 2011 11:39 pm
by marmar29 » Fri Apr 22, 2011 8:40 pm
please help in solving ths q.

THE MEAN WEIGHT OF A GROUP OF 11 MEN IS 70KG . WHT IS THE MEAN WT OF THE REMAINING GP WHN A MAN 90KG LEAVES??
Top
Join the discussion
Source: — Quantitative Reasoning |
User avatar
Master | Next Rank: 500 Posts
Posts: 436
Joined: Tue Feb 08, 2011 3:07 amFollowed by: 6 members
Thanked: 72 times

by manpsingh87 » Sat Apr 23, 2011 12:04 am
marmar29 wrote:please help in solving ths q.

THE MEAN WEIGHT OF A GROUP OF 11 MEN IS 70KG . WHT IS THE MEAN WT OF THE REMAINING GP WHN A MAN 90KG LEAVES??
let total weight of 11 men=x;
therefore we have x/11=70; x=770;
now when 90 kg man leaves the group,remaining number of men will be 10 and their mean weight can be given as
x-90/10=770-90/10=68
O Excellence... my search for you is on... you can be far.. but not beyond my reach!
Top
Join the discussion

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 16206
Joined: Mon Dec 08, 2008 6:26 pmFollowed by: 1268 members
Location: Vancouver, BC
Thanked: 5254 times
GMAT Score:770

by Brent@GMATPrepNow » Sat Apr 23, 2011 6:52 am
marmar29 wrote:please help in solving ths q.

THE MEAN WEIGHT OF A GROUP OF 11 MEN IS 70KG . WHT IS THE MEAN WT OF THE REMAINING GP WHN A MAN 90KG LEAVES??
Hi marmar29,

Please provide answer choices when posting questions.
There are many instances on the GMAT when one can use the answer choices to quickly find the correct answer without performing lengthy calculations.

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Top
Join the discussion