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

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

It appears that you are browsing the GMAT Club forum unregistered!

Signing up is free, quick, and confidential.
Join other 500,000 members and get the full benefits of GMAT Club

Registration gives you:

Tests

Take 11 tests and quizzes from GMAT Club and leading GMAT prep companies such as Manhattan GMAT,
Knewton, and others. All are free for GMAT Club members.

Applicant Stats

View detailed applicant stats such as GPA, GMAT score, work experience, location, application
status, and more

Books/Downloads

Download thousands of study notes,
question collections, GMAT Club’s
Grammar and Math books.
All are free!

Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:

A straight picket fence is composed of x pickets each of whi [#permalink]

Show Tags

08 Sep 2004, 00:58

26

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

95% (hard)

Question Stats:

35% (02:40) correct
65% (01:28) wrong based on 856 sessions

HideShow timer Statistics

A straight picket fence is composed of x pickets each of which is 1/2 inch wide. If there are 6 inches of space between each pair of pickets, which of the following represents the length of fence in feet?

A. 13x/2 B. 13x/2 - 6 C. 13x/24 D. (13x+1)/24 E. (13x-12)/24

I think bot of you are missing something to this question,I hope I could compy the question here and digest it properly.
I think the answer shd be E

Number of pickeks = x
Size of pickets = 1/2
length of pickets = 1/2x
If there are x pickets, it implies that there are x -1 spaces between the picket
Length of space = 6

total number of length = 1/2 x + 6(x-1) in inches
total lenth in feet =( 1/2 x + 6(x-1))/12
Simplify to get (13X-12)/24

I think bot of you are missing something to this question,I hope I could compy the question here and digest it properly. I think the answer shd be E

Number of pickeks = x Size of pickets = 1/2 length of pickets = 1/2x If there are x pickets, it implies that there are x -1 spaces between the picket Length of space = 6

total number of length = 1/2 x + 6(x-1) in inches total lenth in feet =( 1/2 x + 6(x-1))/12 Simplify to get (13X-12)/24

Alternatively, each picket and the adjacent empty space represents a length of 6.5 inches.

Thus, total length of the fence = 6.5x - (6 inches for the one fewer empty space) = (13x-12)/2 in inches = (13x-12)/24 in feet.

This is crazy. I got to the point where I do not know what the conversion factor is from inches to feet. Since GMAT is taken by an international community, shouldn't they stick to SI units?

Re: A straight picket fence is composed of X pickets each of [#permalink]

Show Tags

20 Sep 2013, 01:24

1

This post received KUDOS

1

This post was BOOKMARKED

Can someone please explain why the answer is not D

I did it algebraically.

Basically since the 'space between pickets' is 6 inches and the pickets are 1/2 inch

why can't we just use 6 1/2 x + 1/2 Because each picket will have 6 inches of space and then you just add 1/2 inch for the extra picket. Doing this algebraically I get D

Can someone please explain why the answer is not D

I did it algebraically.

Basically since the 'space between pickets' is 6 inches and the pickets are 1/2 inch

why can't we just use 6 1/2 x + 1/2 Because each picket will have 6 inches of space and then you just add 1/2 inch for the extra picket. Doing this algebraically I get D

(6.5 x + .5) / 12 --> (13x - 12) / 24

A straight picket fence is composed of x pickets each of which is 1/2 inch wide. If there are 6 inches of space between each pair of pickets, which of the following represents the length of fence in feet? A. 13x/2 B. 13x/2 - 6 C. 13x/24 D. (13x+1)/24 E. (13x-12)/24

x pickets mean x-1 fences, each of which is 6 inches wide.

So, the length = \(6(x-1)+\frac{1}{2}*x=\frac{13x-12}{2}\) inches, or \(\frac{13x-12}{24}\) feet.

Re: A straight picket fence is composed of X pickets each of [#permalink]

Show Tags

21 Sep 2013, 20:27

2

This post received KUDOS

1

This post was BOOKMARKED

Bunuel wrote:

laserglare wrote:

Can someone please explain why the answer is not D

I did it algebraically.

Basically since the 'space between pickets' is 6 inches and the pickets are 1/2 inch

why can't we just use 6 1/2 x + 1/2 Because each picket will have 6 inches of space and then you just add 1/2 inch for the extra picket. Doing this algebraically I get D

(6.5 x + .5) / 12 --> (13x - 12) / 24

A straight picket fence is composed of x pickets each of which is 1/2 inch wide. If there are 6 inches of space between each pair of pickets, which of the following represents the length of fence in feet? A. 13x/2 B. 13x/2 - 6 C. 13x/24 D. (13x+1)/24 E. (13x-12)/24

x pickets mean x-1 fences, each of which is 6 inches wide.

So, the length = \(6(x-1)+\frac{1}{2}*x=\frac{13x-12}{2}\) inches, or \(\frac{13x-12}{2}\) feet.

Answer: E.

Hope it's clear.

A small typo...you wrote 2 instead of 24 in denominator.
_________________

The First and Last time !!!

BKPL - Below Kudos Poverty Line .....Need your help.

Can someone please explain why the answer is not D

I did it algebraically.

Basically since the 'space between pickets' is 6 inches and the pickets are 1/2 inch

why can't we just use 6 1/2 x + 1/2 Because each picket will have 6 inches of space and then you just add 1/2 inch for the extra picket. Doing this algebraically I get D

(6.5 x + .5) / 12 --> (13x - 12) / 24

A straight picket fence is composed of x pickets each of which is 1/2 inch wide. If there are 6 inches of space between each pair of pickets, which of the following represents the length of fence in feet? A. 13x/2 B. 13x/2 - 6 C. 13x/24 D. (13x+1)/24 E. (13x-12)/24

x pickets mean x-1 fences, each of which is 6 inches wide.

So, the length = \(6(x-1)+\frac{1}{2}*x=\frac{13x-12}{2}\) inches, or \(\frac{13x-12}{2}\) feet.

Answer: E.

Hope it's clear.

A small typo...you wrote 2 instead of 24 in denominator.

Re: A straight picket fence is composed of x pickets each of whi [#permalink]

Show Tags

06 Oct 2014, 21:46

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

Re: A straight picket fence is composed of x pickets each of whi [#permalink]

Show Tags

09 Oct 2014, 12:05

Would the GMAT consider that the imperial unit system is general knowledge? I am asking because I come from a metric system country and have no idea about feet inches, pound ounces and all of that...

Would the GMAT consider that the imperial unit system is general knowledge? I am asking because I come from a metric system country and have no idea about feet inches, pound ounces and all of that...

Will I have to learn it?

No. The question itself will supply the relative conversions. Though you should have a few basic ones memorized: 1 hour = 60 minutes, ...

Re: A straight picket fence is composed of x pickets each of whi [#permalink]

Show Tags

04 Nov 2015, 02:18

Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

Want to see all other topics I dig out? Follow me (click follow button on profile). You will receive a summary of all topics I bump in your profile area as well as via email.
_________________

A straight picket fence is composed of x pickets each of which is 1/2 inch wide. If there are 6 inches of space between each pair of pickets, which of the following represents the length of fence in feet?

A. 13x/2 B. 13x/2 - 6 C. 13x/24 D. (13x+1)/24 E. (13x-12)/24

Whenever you have variables in the answer choices, just plug in. If x = 1, there is only one picket which is 1/2 inch wide. Since 1 foot has 12 inches, 1/2 inch would be 1/24 of a foot. Look for the choice in which if you put x = 1, you get 1/24.

A straight picket fence is composed of x pickets each of whi [#permalink]

Show Tags

25 Jan 2016, 20:38

Bunuel wrote:

laserglare wrote:

Can someone please explain why the answer is not D

I did it algebraically.

Basically since the 'space between pickets' is 6 inches and the pickets are 1/2 inch

why can't we just use 6 1/2 x + 1/2 Because each picket will have 6 inches of space and then you just add 1/2 inch for the extra picket. Doing this algebraically I get D

(6.5 x + .5) / 12 --> (13x - 12) / 24

A straight picket fence is composed of x pickets each of which is 1/2 inch wide. If there are 6 inches of space between each pair of pickets, which of the following represents the length of fence in feet? A. 13x/2 B. 13x/2 - 6 C. 13x/24 D. (13x+1)/24 E. (13x-12)/24

x pickets mean x-1 fences, each of which is 6 inches wide.

So, the length = \(6(x-1)+\frac{1}{2}*x=\frac{13x-12}{2}\) inches, or \(\frac{13x-12}{24}\) feet.

Answer: E.

Hope it's clear.

i started it with making an equation just like you did but what i did is:

\(6(x-1)+\frac{1}{2}*x=.5(x-1)+\frac{1}{24}*x\)

but by solving this equation i couldn't come to the final equation which is in the options list.

can you help me out with it...i want to understand when to convert it before hand and when to wait for it . :/

i started it with making an equation just like you did but what i did is:

\(6(x-1)+\frac{1}{2}*x=.5(x-1)+\frac{1}{24}*x\)

but by solving this equation i couldn't come to the final equation which is in the options list.

can you help me out with it...i want to understand when to convert it before hand and when to wait for it . :/

HELP

Hi, lets start where you left..

\(6(x-1)+\frac{1}{2}*x=.5(x-1)+\frac{1}{24}*x\)... \(.5x-.5+\frac{x}{24}\).. \(\frac{{24(.5x-.5)+x}}{24}\) \(\frac{{(12x-12)+x}}{24}\)... \(\frac{{13x-12}}{24}\)... this is the answer required..

But I can advice you that do the change in inches to feets in the final step rather than in initial steps.. It will be less complicated.. \(6(x-1)+\frac{1}{2}*x=6x-6+\frac{1}{2}*x\)... =\(\frac{{(12x-12)+x}}{2}=\frac{{13x-12}}{2}\).. now change to feet by dividing by 12..
_________________

i started it with making an equation just like you did but what i did is:

\(6(x-1)+\frac{1}{2}*x=.5(x-1)+\frac{1}{24}*x\)

but by solving this equation i couldn't come to the final equation which is in the options list.

can you help me out with it...i want to understand when to convert it before hand and when to wait for it . :/

HELP

Note that all options have a single x. So this should give you a hint that you have to further simplify your expression to bring the x's together. Once you do, it will match one option.
_________________

Happy New Year everyone! Before I get started on this post, and well, restarted on this blog in general, I wanted to mention something. For the past several months...

It’s quickly approaching two years since I last wrote anything on this blog. A lot has happened since then. When I last posted, I had just gotten back from...

Post-MBA I became very intrigued by how senior leaders navigated their career progression. It was also at this time that I realized I learned nothing about this during my...