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If x is a positive number, is xy a positive number? (1) y ≤ x (2) y ≥

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If x is a positive number, is xy a positive number? (1) y ≤ x (2) y ≥  [#permalink]

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New post 25 Sep 2018, 05:37
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A
B
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  15% (low)

Question Stats:

91% (00:35) correct 9% (00:21) wrong based on 36 sessions

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If x is a positive number, is xy a positive number? (1) y ≤ x (2) y ≥  [#permalink]

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New post 25 Sep 2018, 05:54
Bunuel wrote:
If x is a positive number, is xy a positive number?

(1) y ≤ x
(2) y ≥ x



In order to make xy positive , both x or y has to be positive or both has to be negative.

Statement 1: y≤x . Although x is positive , y could be negative. NOT sufficient.

Statement 2: y≥x. As x is positive , y has to be positive. So, xy>0, positive. Sufficient.

The best answer is B.
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If x is a positive number, is xy a positive number? (1) y ≤ x (2) y ≥  [#permalink]

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New post 25 Sep 2018, 23:00
Bunuel wrote:
If x is a positive number, is xy a positive number?

(1) y ≤ x
(2) y ≥ x


Question: Is xy a positive Number?

Question: Do x and y have same signs>?

Statement 1: y ≤ x
y may be Positive and x may be positive as well
y may be Negative and x may be positive
NOT SUFFICIENT

Statement 2: y ≥ x
x is Positive adn y is greater than or equal to x therefore y also must be a positive number
SUFFICIENT



Answer: Option B
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If x is a positive number, is xy a positive number? (1) y ≤ x (2) y ≥   [#permalink] 25 Sep 2018, 23:00
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