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# What is the value of n^2/(x + n)?

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Math Expert
Joined: 02 Sep 2009
Posts: 43804
What is the value of n^2/(x + n)? [#permalink]

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12 Sep 2017, 04:14
00:00

Difficulty:

55% (hard)

Question Stats:

58% (01:09) correct 42% (01:16) wrong based on 17 sessions

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What is the value of n^2/(x + n)?

(1) n^2 – 5n – 4x = x
(2) x = n
[Reveal] Spoiler: OA

_________________
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Joined: 25 Feb 2013
Posts: 919
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GPA: 3.82
Re: What is the value of n^2/(x + n)? [#permalink]

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12 Sep 2017, 07:00
Bunuel wrote:
What is the value of n^2/(x + n)?

(1) n^2 – 5n – 4x = x
(2) x = n

Statement 1: $$n^2 = x+4x+5n = 5(x+n)$$. We can substitute the value of $$n^2$$ to get the value of the expression. Hence Sufficient

Statement 2: $$x=n$$. on substituting the value of $$x$$ in the expression $$\frac{n^2}{(n+n)} = \frac{n}{2}$$. But we don't know the value of $$n$$. Hence Insufficient

Option A
Re: What is the value of n^2/(x + n)?   [#permalink] 12 Sep 2017, 07:00
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