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Median Coffee blend

This topic has 4 member replies
kulksnikhil Senior | Next Rank: 100 Posts Default Avatar
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23 May 2006
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2

Median Coffee blend

Post 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

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aim-wsc Legendary Member
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Post Tue Dec 05, 2006 8:13 pm
thanks for pointing out that buddy. Smile

i missed that point. Shocked

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projase Junior | Next Rank: 30 Posts Default Avatar
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Post 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. Smile

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.

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aim-wsc Legendary Member
Joined
20 Apr 2006
Posted:
2470 messages
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85
Target GMAT Score:
801-
Post Tue Dec 05, 2006 8:13 pm
thanks for pointing out that buddy. Smile

i missed that point. Shocked

_________________
Getting started @BTG?
Beginner's Guide to GMAT | Beating GMAT & beyond
Please do not PM me, (not active anymore) contact Eric.

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projase Junior | Next Rank: 30 Posts Default Avatar
Joined
03 Dec 2006
Posted:
14 messages
Post 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. Smile

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.

  • +1 Upvote Post
  • Quote
  • Flag

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