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If xy is not equal to 0, what is the value of 25x^2/y^2?

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Joined: 06 Feb 2010
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Schools: University of Dhaka - Class of 2010
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If xy is not equal to 0, what is the value of 25x^2/y^2?  [#permalink]

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Updated on: 27 Sep 2017, 02:34
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25% (medium)

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70% (01:06) correct 30% (01:27) wrong based on 154 sessions

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If xy is not equal to 0, what is the value of $$\frac{25x^2}{y^2}$$?

(1) x = 3
(2) 5x - 2y = 0

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Originally posted by monirjewel on 28 Oct 2010, 22:30.
Last edited by Bunuel on 27 Sep 2017, 02:34, edited 2 times in total.
Renamed the topic and edited the question.
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If xy is not equal to 0, what is the value of 25x^2/y^2?  [#permalink]

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29 Oct 2010, 04:06
2
If xy is not equal to 0, what is the value of $$\frac{25x^2}{y^2}$$?

(1) x = 3 --> clearly insufficient as no info about y.

(2) 5x - 2y = 0 --> $$5x=2y$$ --> $$\frac{25x^2}{y^2}=\frac{(5x)^2}{y^2}=\frac{(2y)^2}{y^2}=\frac{4y^2}{y^2}=4$$. Sufficient.

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Re: If xy is not equal to 0, what is the value of 25x^2/y^2?  [#permalink]

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05 Feb 2016, 11:22
monirjewel wrote:
If xy is not equal to 0, what is the value of 25x^2/y^2?
(1) X=3
(2) 5x-2y=0

Question : what is the value of 25x^2/y^2?

Question Rephrased : x/y=??

Statement 1: x=3
x/y is unknown. Hence
NOT SUFFICIENT

Statement 2: 5x-2y=0
i.e. x/y = 2/5
SUFFICIENT

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Re: If xy is not equal to 0, what is the value of 25x^2/y^2?  [#permalink]

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27 Sep 2017, 01:59
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Re: If xy is not equal to 0, what is the value of 25x^2/y^2? &nbs [#permalink] 27 Sep 2017, 01:59
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