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# Is x greater than y?

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Intern
Joined: 22 Jul 2013
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Is x greater than y? [#permalink]

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23 Jul 2013, 03:55
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Difficulty:

55% (hard)

Question Stats:

56% (00:50) correct 44% (00:57) wrong based on 85 sessions

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Is x greater than y?

(1) x>2y
(2) x-y>0

[Reveal] Spoiler:
it is data sufficiency test, and i my answer is D but the answer says its B. anyone has any idea why?
[Reveal] Spoiler: OA

Last edited by Bunuel on 23 Jul 2013, 07:27, edited 1 time in total.
Renamed the topic and edited the question.

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Director
Joined: 14 Dec 2012
Posts: 832

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Location: India
Concentration: General Management, Operations
GMAT 1: 700 Q50 V34
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23 Jul 2013, 04:34
sudeepnkafle wrote:
is x greater than y?
(1). x>2y
(2). x-y>0

it is data sufficiency test, and i my answer is D but the answer says its B. anyone has any idea why?

statement 1:
$$x>2y$$
case 1:
let say $$x = 3$$
$$y= 1$$
clearly $$x > y and x > 2y$$
case 2:
let say$$x = -3 and y=-2$$
here $$x>2y$$...but $$x<y$$
hence this makes this option wrong.

statement 2:
$$x-y>0$$
clearly $$x>y$$===>suffocient.

hence B
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23 Jul 2013, 05:39
sudeepnkafle wrote:
is x greater than y?
(1). x>2y
(2). x-y>0

it is data sufficiency test, and i my answer is D but the answer says its B. anyone has any idea why?

From F.S 1, we know that x>2y.

Now, if y>0, then we can plot the above as this on the number line : -----y -----2y------x----

Thus, x>y. However, if y<0, then ------2y---x--y------- or -----2y-----y------x---

Thus, Insufficient.

From F.S 2, we know that x>y as it is given in the statement. Sufficient.

B.
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Re: Is x greater than y? [#permalink]

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21 Apr 2016, 21:04
Though its a good question ,but the tag should be changed.Its a 600-700 level question and not a 700 level.

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Re: Is x greater than y?   [#permalink] 21 Apr 2016, 21:04
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