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 →

Averages...........

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 155
Joined: Wed Sep 22, 2010 3:54 am
Thanked: 6 times
by pzazz12 » Wed Oct 06, 2010 10:52 pm
40% of the employees in a factory are workers. All the remaining employees are executives. The annual income of each worker is $390.The annual income of each executive is $420. What is the average annual income of all the employees in the factory together?

A. 390
B. 405
C. 408
D. 415
E. 420
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Problem Solving |
User avatar
Community Manager
Posts: 991
Joined: Thu Sep 23, 2010 6:19 amFollowed by: 24 members
Location: Bangalore, India
Thanked: 146 times

by shovan85 » Thu Oct 07, 2010 12:41 am
IMO C

Let total employee = x
workers = 0.4x
executives = 0.6x

[(0.4x * 390) + (0.6x * 420)]/ x = (156x + 252x)/x = 408
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Master | Next Rank: 500 Posts
Posts: 250
Joined: Thu Jan 07, 2010 2:21 am
Thanked: 10 times

by saurabhmahajan » Thu Oct 07, 2010 12:57 am
Say total of 10 emp.
so 40% means 4 emp have annual income of 390 = 4*390
remaining 60% means 6 emp have annual income of 420 = 6*420

therefore (4*390)+(6*420)/10 = 408
Thanks and regards,
Saurabh Mahajan

I can understand you not winning,but i will not forgive you for not trying.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 22
Joined: Tue Aug 31, 2010 9:44 pm

by pkan51 » Thu Oct 07, 2010 1:18 am
here is my set up

.4(x)=w .6(x)=e
w=$390 e=$420

assume 10ppl = 100% of the workforce

390(4)=$1560 420(6)=$2520

1560+2520=$4080

$4080/10=Average=$408
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
GMAT Instructor
Posts: 1302
Joined: Mon Oct 19, 2009 2:13 pmFollowed by: 164 members
Location: Toronto
Thanked: 539 times
GMAT Score:800

by Testluv » Thu Oct 07, 2010 1:39 am
No math:

If 50% of the employees were workers, and the other 50% execs, then the average of all workers would be dead center between the two salaries: 405. However, since 60% are execs, the average must be tilted a little bit towards the execs: only choice C fits the bill.
Kaplan Teacher in Toronto
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1