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# Does x = 100? (1) y = x/100*x/100*y (2) x > 0

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Math Expert
Joined: 02 Sep 2009
Posts: 60687
Does x = 100? (1) y = x/100*x/100*y (2) x > 0  [#permalink]

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15 Nov 2019, 02:33
00:00

Difficulty:

65% (hard)

Question Stats:

32% (01:04) correct 68% (00:53) wrong based on 74 sessions

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Does $$x = 100$$?

(1) $$y=\frac{x}{100}*\frac{x}{100}*y$$

(2) $$x > 0$$

Are You Up For the Challenge: 700 Level Questions

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Intern
Joined: 29 Jul 2019
Posts: 16
Re: Does x = 100? (1) y = x/100*x/100*y (2) x > 0  [#permalink]

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15 Nov 2019, 04:56
1
Does x=100x=100?

(1) y=x/100∗x/100∗y - Not sufficient. Because , y may or may not be equal to 0. If y not equal to 0, statement is sufficient . But if y= 0, its not sufficient

(2) x>0- Not sufficient. x maybe any value greater than 0

If we combine both the equations , we still don't know anything about y. C is not sufficient.
Therefore, right answer is E
Senior Manager
Joined: 16 Feb 2015
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Concentration: Finance, Operations
Re: Does x = 100? (1) y = x/100*x/100*y (2) x > 0  [#permalink]

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19 Nov 2019, 21:18
1
Bunuel wrote:
Does $$x = 100$$?

(1) $$y=\frac{x}{100}*\frac{x}{100}*y$$

(2) $$x > 0$$

Are You Up For the Challenge: 700 Level Questions

Explanation:

Statement1, As we don't know anything about y. it can be any value. Negative, zero or positive.
So Not sufficient.

Statement X> 0, which is also not sufficient.

Combined 1 & 2, Still don't know anything about y Therefore not sufficient.

Please provide kudos, if you find my explanation good enough
Intern
Joined: 05 Nov 2015
Posts: 14
Re: Does x = 100? (1) y = x/100*x/100*y (2) x > 0  [#permalink]

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07 Jan 2020, 02:12
Why cant we go with plain old technique of cancelling the y to get X^2=10000 i.e X=100 or X= - 100 ------1

and in second equation X>0 when we combine 1+2 we get X= 100 as X>0 and X= 100 or -100

Thus C
Re: Does x = 100? (1) y = x/100*x/100*y (2) x > 0   [#permalink] 07 Jan 2020, 02:12
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# Does x = 100? (1) y = x/100*x/100*y (2) x > 0

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