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.

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]
08 Sep 2004, 00:58

00:00

A

B

C

D

E

Difficulty:

55% (hard)

Question Stats:

35% (02:21) correct
65% (01:20) wrong based on 107 sessions

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]
20 Sep 2013, 01:24

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

Re: A straight picket fence is composed of X pickets each of [#permalink]
20 Sep 2013, 01:35

Expert's post

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.

Re: A straight picket fence is composed of X pickets each of [#permalink]
21 Sep 2013, 20:27

1

This post received KUDOS

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.

Re: A straight picket fence is composed of X pickets each of [#permalink]
22 Sep 2013, 02:20

1

This post received KUDOS

Expert's post

StormedBrain wrote:

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.