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:

The distance between two points is X. The number of inches [#permalink]
07 Mar 2012, 17:30

4

This post was BOOKMARKED

00:00

A

B

C

D

E

Difficulty:

45% (medium)

Question Stats:

42% (02:06) correct
58% (01:04) wrong based on 106 sessions

The distance between two points is X. The number of inches in X is equal to the square root of the number of feet in X (1 foot =12 inches.) What is the length of X, in inches?

A. 144 B. 12 C. 1 D. 1/12 E. 1/144

I'm have problems understanding this question... Please Help!!!

Re: The distance between two points is X - Master GMAT [#permalink]
07 Mar 2012, 17:34

rsaraiya wrote:

The distance between two points is X. The number of inches in X is equal to the square root of the number of feet in X (1 foot =12 inches.) What is the length of X, in inches?

(a) 144 (b) 12 (c) 1 (d) 1/12 (e) 1/144

Have problems understanding this question... Please Help!!!

I'll post the official explanation below.

Here is Master GMAT's explanation... I couldn't really follow their steps... I kept getting (a)

If X is 1/12 inches long, there are [(1/12)inches /12] = [1/144]ft in X. Since (1/12) = Sqrt(1/144) the number of inches is equal to the square root of the number of feet in X, and this is the correct answer.

Re: The distance between two points is X - Master GMAT [#permalink]
07 Mar 2012, 21:59

2

This post received KUDOS

Expert's post

1

This post was BOOKMARKED

rsaraiya wrote:

The distance between two points is X. The number of inches in X is equal to the square root of the number of feet in X (1 foot =12 inches.) What is the length of X, in inches?

(a) 144 (b) 12 (c) 1 (d) 1/12 (e) 1/144

I'm have problems understanding this question... Please Help!!!

I'll post the official explanation below.

Say # of inches in X is a, then # of feet in X is \frac{a}{12}, (since 1 foot =12 inches). Question: the length of X, in inches = a = ?

We are told that a is equal to the square root of \frac{a}{12} --> a=\sqrt{\frac{a}{12}} --> a^2=\frac{a}{12} --> a=\frac{1}{12}.

Re: The distance between two points is X - Master GMAT [#permalink]
07 Mar 2012, 23:10

Bunuel wrote:

rsaraiya wrote:

The distance between two points is X. The number of inches in X is equal to the square root of the number of feet in X (1 foot =12 inches.) What is the length of X, in inches?

(a) 144 (b) 12 (c) 1 (d) 1/12 (e) 1/144

I'm have problems understanding this question... Please Help!!!

I'll post the official explanation below.

Say # of inches in X is a, then # of feet in X is \frac{a}{12}, (since 1 foot =12 inches). Question: the length of X, in inches = a = ?

We are told that a is equal to the square root of \frac{a}{12} --> a=\sqrt{\frac{a}{12}} --> a^2=\frac{a}{12} --> a=\frac{1}{12}.

Re: The distance between two points is X - Master GMAT [#permalink]
05 Feb 2013, 20:03

Bunuel wrote:

rsaraiya wrote:

The distance between two points is X. The number of inches in X is equal to the square root of the number of feet in X (1 foot =12 inches.) What is the length of X, in inches?

(a) 144 (b) 12 (c) 1 (d) 1/12 (e) 1/144

I'm have problems understanding this question... Please Help!!!

I'll post the official explanation below.

Say # of inches in X is a, then # of feet in X is \frac{a}{12}, (since 1 foot =12 inches). Question: the length of X, in inches = a = ?

We are told that a is equal to the square root of \frac{a}{12} --> a=\sqrt{\frac{a}{12}} --> a^2=\frac{a}{12} --> a=\frac{1}{12}.

Answer: D.

Thank you for the explanation, very helpful, but is this really a sub-600 level question? _________________

"How far that little candle throws his beams. So shines a good deed in a weary world." - Shakespeare