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What is 5 percent of x ? (1) x = 200 (2) 10 percent of x is 20.

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Joined: 01 Sep 2010
Posts: 3304
What is 5 percent of x ? (1) x = 200 (2) 10 percent of x is 20.  [#permalink]

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New post 01 Nov 2018, 02:46
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A
B
C
D
E

Difficulty:

  15% (low)

Question Stats:

100% (00:12) correct 0% (00:00) wrong based on 22 sessions

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Joined: 02 Aug 2014
Posts: 91
Re: What is 5 percent of x ? (1) x = 200 (2) 10 percent of x is 20.  [#permalink]

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New post 04 Nov 2018, 09:07
What is 5 percent of x ?

(1) \(x = 200\)

\(\frac{5}{100}*x=\frac{5}{100}*200= 10\)

Sufficient

(2) \(10\) percent of \(x\) is \(20\).

\(\frac{10}{100}*x = 20\)

Donc \(x=200\)

so \(\frac{5}{100}*x=\frac{5}{100}*200= 10\)

Answer D

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Re: What is 5 percent of x ? (1) x = 200 (2) 10 percent of x is 20.  [#permalink]

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New post 04 Nov 2018, 09:39
The answer is D.

we can solve this question using Logic, no need to calculate. In order to find 5%*x, we need the value of x.
(1) gives us this directly.
(2) is one equation with one variable ==> we can definitely find x.
Conclusion: both are sufficient!
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Re: What is 5 percent of x ? (1) x = 200 (2) 10 percent of x is 20. &nbs [#permalink] 04 Nov 2018, 09:39
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