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

Averages problem

Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
Junior | Next Rank: 30 Posts
Posts: 26
Joined: Thu Jul 17, 2008 1:02 pm
by jessicamuniz » Sat Aug 09, 2008 3:12 pm
Hi,
Here is a question. The answer is A but I would like to get your point of view with the explanations.
Thanks a lot in advance.

If each of the bowlers in a tournament bowled an equal number of games, what is the average (arithmetic mean) score of all the games bowled in the tournament?
1) Seventy percent of the bowlers had an average (arithmetic mean) score of 120, and the other 30% had an average score of 140.
2) Each of the 350 bowlers in the tournament bowled 3 games.
Top
Join the discussion
Source: — Problem Solving |
User avatar
Master | Next Rank: 500 Posts
Posts: 200
Joined: Sun Jun 17, 2007 10:46 am
Location: Canada
Thanked: 9 times

Re: Averages problem

by beeparoo » Sat Aug 09, 2008 5:04 pm
jessicamuniz wrote:Hi,
Here is a question. The answer is A but I would like to get your point of view with the explanations.
Thanks a lot in advance.

If each of the bowlers in a tournament bowled an equal number of games, what is the average (arithmetic mean) score of all the games bowled in the tournament?
1) Seventy percent of the bowlers had an average (arithmetic mean) score of 120, and the other 30% had an average score of 140.
2) Each of the 350 bowlers in the tournament bowled 3 games.
STATEMENT 1:
Let b = total number of bowlers
Let SUM(tot) = sum of all scores

Let SUM(A) = sum of the scores of 70% of bowlers
SUM(A)/0.7b = 120

Let SUM(B) = sum of the scores of the rest of the bowlers; the 30%
SUM(B)/0.3b = 140

SUM(tot) = SUM(A) + SUM(B) = 120*(0.7b) + 140*(0.3b)

Avg = SUM(tot)/b = 120*0.7 + 140*0.3 ....SUFFICIENT

Statement 2:
Without any information about the total scores, you cannot calcalate the average score. ....INSUFFICIENT
GMAT obsession begone - girl needs her social life back.
Top
Join the discussion