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The distance between two points is X. The number of inches [#permalink]
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07 Mar 2012, 18:30
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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.
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Last edited by rsaraiya on 07 Mar 2012, 18:39, edited 1 time in total.



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Re: The distance between two points is X  Master GMAT [#permalink]
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07 Mar 2012, 18:34
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.



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Re: The distance between two points is X  Master GMAT [#permalink]
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07 Mar 2012, 22:59
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Re: The distance between two points is X  Master GMAT [#permalink]
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08 Mar 2012, 00:10
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 \(\frac{a}{12}\) > \(a=\sqrt{\frac{a}{12}}\) > \(a^2=\frac{a}{12}\) > \(a=\frac{1}{12}\). Answer: D. Thanks. That actually makes sense!



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Re: The distance between two points is X  Master GMAT [#permalink]
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05 Feb 2013, 21:03
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 sub600 level question?
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Re: The distance between two points is X. The number of inches [#permalink]
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24 May 2013, 09:10
Inches = sq root of feet and not the other way around. It is worded to be misleading.



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Re: The distance between two points is X. The number of inches [#permalink]
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26 May 2013, 07:19
hatespamners wrote: Inches = sq root of feet and not the other way around. It is worded to be misleading. Even i also have the same doubt. 12 inches make 1 feet logically, the value of # of inches should have square root as against the larger denomination feet...



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Re: The distance between two points is X. The number of inches [#permalink]
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Re: The distance between two points is X. The number of inches [#permalink]
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03 Aug 2016, 08:59
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. X inches = \sqrt{X in feet} 1 inch = 1/12 foot X inches= X/12 feet X inches= \sqrt{X/12} Squaring both sides: X^2= X/12 X= 1/12 D is the answer
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Re: The distance between two points is X. The number of inches [#permalink]
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07 Nov 2016, 14:52
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x inches = sqrt(x/12) x^2 = [sqrt(x/12)]^2 12x^2 x =0 x(12x1)=0 x=0 or x=1/12



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Re: The distance between two points is X. The number of inches [#permalink]
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27 May 2017, 14:00
law258 wrote: x inches = sqrt(x/12) x^2 = [sqrt(x/12)]^2 12x^2 x =0 x(12x1)=0 x=0 or x=1/12 This actually makes sense to me! Thanks I was struggling before I saw this! Posted from GMAT ToolKit




Re: The distance between two points is X. The number of inches
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