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 →

table

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 54
Joined: Wed Jul 20, 2011 12:36 pm
Thanked: 2 times
by sumasajja » Sat Jul 23, 2011 8:43 am
number of lawn mowers
monday 752
tuesday 747
wednesday 755
thursday 754
friday

the table above shows the number of lawn mowers produced by company l each workday last week except friday.if company l produces an average (arithematic mean of 750 lawn mowers per day for the work week ,how many lawn mowers did it produce on friday?
a]736
b]739
c]742
d]750
e]758
the answer is [spoiler]c
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Legendary Member
Posts: 504
Joined: Tue Apr 19, 2011 1:40 pmFollowed by: 11 members
Thanked: 114 times

by knight247 » Sat Jul 23, 2011 8:59 am
(Sum of the # of lawn movers produced every day of the work week)/total number of working days=Average # of lawn movers produced per day for the work week

(752+747+755+754+Friday)/5=750

(752+747+755+754+Friday)= 3750
3008+Friday=3750
Friday=742 Hence C
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 111
Joined: Tue Dec 30, 2008 1:25 pm
Location: USA
Thanked: 28 times
GMAT Score:770

by goalevan » Sat Jul 23, 2011 9:24 am
You can also track the residuals to find the remaining observation.

The average is 750, so

752 - 750 = 2
747 - 750 = -3
755 - 750 = 5
754 - 750 = 4

The sum of the first four residuals is 2 + (-3) + 5 + 4 = 8, so the final one must be -8 to bring the mean to 750.

750 + (-8) = 742.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1