Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 27 Jun 2016, 10:03

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

Another one that I'm stuck with. Five pieces of wood have an

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Intern
Joined: 11 Jul 2007
Posts: 24
Followers: 0

Kudos [?]: 1 [0], given: 0

Another one that I'm stuck with. Five pieces of wood have an [#permalink]

Show Tags

03 Dec 2007, 15:33
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Another one that I'm stuck with.

Five pieces of wood have an average length of 124 centimeters and a median length of 140 centimeters. What is the maximum possible length, in centimeters, of the shortest piece of wood?

90
100
110
130
140

I have no clue on how to approach this question. arghhh
SVP
Joined: 29 Aug 2007
Posts: 2492
Followers: 65

Kudos [?]: 669 [0], given: 19

Re: mean and median [#permalink]

Show Tags

03 Dec 2007, 15:37
chronolinkz wrote:
Another one that I'm stuck with.

Five pieces of wood have an average length of 124 centimeters and a median length of 140 centimeters. What is the maximum possible length, in centimeters, of the shortest piece of wood?

90
100
110
130
140

I have no clue on how to approach this question. arghhh

= [(124x5) - (140x3)]/2
= 100
CEO
Joined: 29 Mar 2007
Posts: 2583
Followers: 18

Kudos [?]: 339 [0], given: 0

Re: mean and median [#permalink]

Show Tags

03 Dec 2007, 23:29
chronolinkz wrote:
Another one that I'm stuck with.

Five pieces of wood have an average length of 124 centimeters and a median length of 140 centimeters. What is the maximum possible length, in centimeters, of the shortest piece of wood?

90
100
110
130
140

I have no clue on how to approach this question. arghhh

S/5=124 --> 620 is the total length of all 5 pieces.

Maximum length of the shortest piece is when everything above median is 140.

so 3*140= 420. 620-420= 200. So we have 100 and 100. That is the MAXIMUM length of the SHORTEST piece.

I caps this one b/c when i did this question a while back I messed up b/c of that.

Ans B
Manager
Joined: 11 Aug 2007
Posts: 64
Followers: 1

Kudos [?]: 12 [0], given: 0

Re: mean and median [#permalink]

Show Tags

04 Dec 2007, 11:00
chronolinkz wrote:
Another one that I'm stuck with.

Five pieces of wood have an average length of 124 centimeters and a median length of 140 centimeters. What is the maximum possible length, in centimeters, of the shortest piece of wood?

90
100
110
130
140

I have no clue on how to approach this question. arghhh

yeap, it's B. The maximum of the shortest means that all others have to have the minimum possibhan mele lenght.

We have smth like this: x1 x2 140 x4 x5. So, the minimum possible lenght of x4 and x5 is 140 (since they could not be less than median). Now we have x1 x2 140 140 140 which add up to 124*5=620. or x1+x2=620-140-140-140=200. The only max.possible length of the shortest is 100
Re: mean and median   [#permalink] 04 Dec 2007, 11:00
Display posts from previous: Sort by

Another one that I'm stuck with. Five pieces of wood have an

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.