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If n > 0, which is greater, 20 percent of n or 10 percent of

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yezz
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If n > 0, which is greater, 20 percent of n or 10 percent of [#permalink] New post   Updated on: 27 Apr 2013, 04:16
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If n > 0, which is greater, 20 percent of n or 10 percent of the sum of n and 0.5 ?

(1) n < 0.1
(2) n> 0.01
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A

Originally posted by yezz on 26 Apr 2013, 13:13.
Last edited by Bunuel on 27 Apr 2013, 04:16, edited 2 times in total.
Renamed the topic and edited the question.
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Re: If n > 0, is 20% of n greater than 10% of the sum of n and 0.5? [#permalink] New post   11 Oct 2018, 04:39
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Bunuel wrote:
If n > 0, is 20% of n greater than 10% of the sum of n and 0.5?

(1) n < 0.1
(2) n > 0.01


Question: is 20% of n greater than 10% of the sum of n and 0.5?

Question: is 0.2n > 0.1(n+0.5)?

Question REPHRASED: is n > 0.5 ?

Statement 1: n < 0.1
i.e. n is NOT greater than 0.5 hence
SUFFICIENT

Statement 2: n > 0.01
i.e. n is may or may NOT be greater than 0.5 hence
NOT SUFFICIENT

Answer: Option A
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hitman5532
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Re: 20 percent of n or 10 percent of the sum of n and 0.5? [#permalink] New post   26 Apr 2013, 13:52
yezz wrote:
n>0, which is greater, 20 percent of n or 10 percent of the sum of n and 0.5?
A. n<0.1
B. n>0.01


S1) n<0.1
20% of 0.1 = .02, so first option is between 0 and .02
10% of (0.1+0.5) = .06 ; 10% of (0.0+0.5) = .05, so the second option is between .05 and .06
Because the range of the second option is always larger than the range of the first option, S1 is sufficient

S2) n>0.01
20% of 0.01 = .002 so the first option is from .002 to infinity
10% of (.001+.05) = .051, so the second option is from .051 to infinity
S2 is not sufficient


I get A

Yezz, how did the OA source describe C as correct? Maybe I am missing something.
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Re: 20 percent of n or 10 percent of the sum of n and 0.5? [#permalink] New post   27 Apr 2013, 03:17
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yezz wrote:
n>0, which is greater, 20 percent of n or 10 percent of the sum of n and 0.5?
A. n<0.1
B. n>0.01


I got the same answer A.

Thу question ask to find which is greatear \(0.2n\) or \(0.1(n+0.5)\). It is the same as to find which is greater \(2n\) or \(n+0.5\), or, similarly, \(n\) or \(0.5\).

(1) We definitely know that \(n<0.5\)
(2) We know nothing.

Must be A.
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Re: If n > 0, which is greater, 20 percent of n or 10 percent of [#permalink] New post   27 Apr 2013, 04:41
Obviously the OA is wrong , I agree 100% on A. thanks to all the source of this question is a document i downloaded from the club that has a collection of questions in it.
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If n > 0, which is greater, 20 percent of n or 10 percent of [#permalink] New post   23 Nov 2017, 05:57
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If n > 0, which is greater, 20 percent of n or 10 percent of the sum of n and 0.5 ?

Is \(0.2n>0.1(n+0.5)\)?
Is \(n>0.5\)?

(1) n < 0.1. Sufficient.
(2) n> 0.01. Not sufficient.

Answer: A.
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Re: If n > 0, which is greater, 20 percent of n or 10 percent of [#permalink] New post   19 Aug 2023, 02:48
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).

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Re: If n > 0, which is greater, 20 percent of n or 10 percent of [#permalink]
19 Aug 2023, 02:48
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