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 →

Median Coffee blend

Expert replies
Post new topic Post Reply
Previous Topic Next Topic
Senior | Next Rank: 100 Posts
Posts: 58
Joined: Tue May 23, 2006 3:35 pm
Location: Seoul, Korea
Thanked: 2 times
by kulksnikhil » Fri Dec 01, 2006 2:50 am
#1 What is the median number of employees assigned per project for the projects at Company Z?

1) 25% of the projects at Company Z have 4 or more employees assigned tto each project
2) 35% of the projects at Company Z have 2 or fewer employees assigned to each project


#2 One Kilogram of a certain coffee blend consists of X kilogram of Type I coffee and y kilogram of Type II coffee. The cost of the blend is C dollars per kilogram, where C=6.5x + 8.5y. Is x<0.8
1) y>0.15
2) C>= 7.3
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Source: — Data Sufficiency |
User avatar
Legendary Member
Posts: 2469
Joined: Thu Apr 20, 2006 12:09 pmFollowed by: 14 members
Location: BtG Underground
Thanked: 85 times

Re: Median Coffee blend

by aim-wsc » Fri Dec 01, 2006 4:53 am
kulksnikhil wrote:#1 What is the median number of employees assigned per project for the projects at Company Z?

1) 25% of the projects at Company Z have 4 or more employees assigned tto each project
2) 35% of the projects at Company Z have 2 or fewer employees assigned to each project
interesting problem.

higher end has 25%
and lower end has 35% of average number of employees.
so there still will be 40% (which comes in the middle of two extremes) of projects which have exact threee employees assigned.

therefore median has to be 3 fit in 35% to 75% of ^ave.-persons-per-project^
ANSWER: both alone are not sufficient but together sufficient.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 2469
Joined: Thu Apr 20, 2006 12:09 pmFollowed by: 14 members
Location: BtG Underground
Thanked: 85 times

Re: Median Coffee blend

by aim-wsc » Fri Dec 01, 2006 5:37 am
kulksnikhil wrote: #2 One Kilogram of a certain coffee blend consists of X kilogram of Type I coffee and y kilogram of Type II coffee. The cost of the blend is C dollars per kilogram, where C=6.5x + 8.5y. Is x<0.8
1) y>0.15
2) C>= 7.3
EDIT: WRONG INADEQUATE/ WRONG EXPLANATION AHEAD
2#
AGAIN interesting problem.
check ( cautious) while dealing with ^IS^ & yes or no type of problems: they are notorious. :)

clearly single inequalities are not sufficient to have a solution.

so if we take both of given conditions simultaneously::::

we can check the formula by putting extreme values.
note that the given data has y is greater than 0.15 while
required problem asks us to check whether x is less than 0.8

(....that clearly tells us the answer as E)

still we should substitute some random value to x and y.
note that x+y=1 kg.

AND therefore refer to the following post.
thankyou.
Last edited by aim-wsc on Tue Dec 05, 2006 8:19 pm, edited 1 time in total.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Junior | Next Rank: 30 Posts
Posts: 14
Joined: Sun Dec 03, 2006 2:45 pm

Re: Median Coffee blend

by projase » Tue Dec 05, 2006 3:31 pm
I am not sure about your answer...

Consider that C=6.5X+8.5Y>=7.3 and X+Y=1

Then 6.5X+(1-X)8.5>=7.3
1.2>=2X
0.6>=X, meaning that "B" is correct...

Please comment.


aim-wsc wrote:
kulksnikhil wrote: #2 One Kilogram of a certain coffee blend consists of X kilogram of Type I coffee and y kilogram of Type II coffee. The cost of the blend is C dollars per kilogram, where C=6.5x + 8.5y. Is x<0.8
1) y>0.15
2) C>= 7.3
2#
AGAIN interesting problem.
check ( cautious) while dealing with ^IS^ & yes or no type of problems: they are notorious. :)

clearly single inequalities are not sufficient to have a solution.

so if we take both of given conditions simultaneously::::

we can check the formula by putting extreme values.
note that the given data has y is greater than 0.15 while
required problem asks us to check whether x is less than 0.8

(....that clearly tells us the answer as E)

still we should substitute some random value to x and y.
note that x+y=1 kg.

answer : together both taken insufficient.
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
User avatar
Legendary Member
Posts: 2469
Joined: Thu Apr 20, 2006 12:09 pmFollowed by: 14 members
Location: BtG Underground
Thanked: 85 times

by aim-wsc » Tue Dec 05, 2006 8:13 pm
thanks for pointing out that buddy. :)

i missed that point. :shock:
Top
Join the discussion
Log in to postLogin with Googleuse password
QUOTE IN REPLY
Post new topic Post Reply
• Page 1 of 1