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Which of the following fractions is equal to the decimal 0.0

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Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 08 Jan 2014, 07:15
3
6
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A
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  15% (low)

Question Stats:

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The Official Guide For GMAT® Quantitative Review, 2ND Edition

Which of the following fractions is equal to the decimal 0.0625 ?

(A) 5/8
(B) 3/8
(C) 1/16
(D) 1/18
(E) 3/80

Problem Solving
Question: 29
Category: Arithmetic Operations on rational numbers
Page: 65
Difficulty: 600


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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 08 Jan 2014, 21:53
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This problem can be solved in < than 20 seconds, if you aware of the fact that (0.625) = 5/8 or 62.5%

Since one more 0 is present before 6, multiply the denominator, 8, by 10.
5/80 = 1/16

Ans is (C).
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 08 Jan 2014, 07:15
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 08 Jan 2014, 08:26
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\(0,0625=\frac{625}{10000}\)
\(\frac{625}{10000}=\frac{1}{16}\)

Answer : C
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 08 Jan 2014, 09:19
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.0625=625/10000
Cancelling by 125 gives:5/80 or 1/16.
Answer:C
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 08 Jan 2014, 10:54
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Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

Which of the following fractions is equal to the decimal 0.0625 ?

(A) 5/8
(B) 3/8
(C) 1/16
(D) 1/18
(E) 3/80

Problem Solving
Question: 29
Category: Arithmetic Operations on rational numbers
Page: 65
Difficulty: 600


GMAT Club is introducing a new project: The Official Guide For GMAT® Quantitative Review, 2ND Edition - Quantitative Questions Project

Each week we'll be posting several questions from The Official Guide For GMAT® Quantitative Review, 2ND Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution.

We'll be glad if you participate in development of this project:
1. Please provide your solutions to the questions;
2. Please vote for the best solutions by pressing Kudos button;
3. Please vote for the questions themselves by pressing Kudos button;
4. Please share your views on difficulty level of the questions, so that we have most precise evaluation.

Thank you!



.625=5/8(check percentage reciprocal conversion)
.0625=5/80=1/16
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 10 Jan 2014, 10:40
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Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

Which of the following fractions is equal to the decimal 0.0625 ?

(A) 5/8
(B) 3/8
(C) 1/16
(D) 1/18
(E) 3/80



1/4 is 0.25
so 1/8 is 0.125
so 1/16 should be 0.0625 - Option C)
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 11 Jan 2014, 06:43
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 07 Aug 2014, 03:07
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\(0.0625 = \frac{625}{10000} = \frac{25 * 25}{100 * 100} = \frac{1}{4*4} = \frac{1}{16}\)

Answer = C

One more method (rather interesting)

0.0625 is a perfect square of 0.25

Its simplification would also yield a perfect square

Only \(\frac{1}{16}\) fits in (Its perfect square of \(\frac{1}{4}\))

Answer = C
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 25 Dec 2014, 00:35
kinjiGC wrote:
Bunuel wrote:
The Official Guide For GMAT® Quantitative Review, 2ND Edition

Which of the following fractions is equal to the decimal 0.0625 ?

(A) 5/8
(B) 3/8
(C) 1/16
(D) 1/18
(E) 3/80



1/4 is 0.25
so 1/8 is 0.125
so 1/16 should be 0.0625 - Option C)


Could you please explain how to calculate 1/8 from 1/4 and similar comparisons?
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 25 Dec 2014, 03:01
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Another way of doing this

625 is square of 25.. Hence 0.0625= (25*25)/(100*100)= 1/16..
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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New post 03 Jan 2015, 06:35
I think kinjiGC gave the smartest solution here, which is why I gave him some kudos!

I did reach the same in 2 ways, by saying that 0.0625 = 625*10^-4, which obviously is 625/10000.

However, as I am not quick with numbers, didn't know that 10000/625 is 16... And, I didn't think of dividing by 625 anyway base on the answer options.

So, as the divisions were easy, I just started doing them from B on. I found it quite quickly, but hat's off to kinjiGC!!!
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Re: Which of the following fractions is equal to the decimal 0.0  [#permalink]

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Re: Which of the following fractions is equal to the decimal 0.0   [#permalink] 27 Nov 2018, 09:00
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