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

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

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01 Nov 2018, 03:46
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What is 5 percent of x ?

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

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Status: Quant Expert Q51
Joined: 02 Aug 2014
Posts: 103
Re: What is 5 percent of x ? (1) x = 200 (2) 10 percent of x is 20.  [#permalink]

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04 Nov 2018, 10:07
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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04 Nov 2018, 10:39
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.   [#permalink] 04 Nov 2018, 10:39
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What is 5 percent of x ? (1) x = 200 (2) 10 percent of x is 20.

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