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# If x - y > 10, is x y > x + y ?

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Manager
Joined: 27 Dec 2009
Posts: 167
If x - y > 10, is x y > x + y ? [#permalink]

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31 Jan 2010, 14:31
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Question Stats:

51% (02:09) correct 49% (01:19) wrong based on 116 sessions

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If x – y > 10, is x – y > x + y ?

(1) x = 8
(2) y = -20
[Reveal] Spoiler: OA
Math Expert
Joined: 02 Sep 2009
Posts: 39589

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31 Jan 2010, 14:56
msand wrote:
If x – y > 10, is x – y > x + y ?
a. x = 8
b. y = -20

OA :
[Reveal] Spoiler:
D

Q: is x – y > x + y? --> is 2y<0? --> is y<0?

(1) x=8 --> 8-y>10 --> y<-2. Sufficient.

(2) y=-20. Sufficient.

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02 Feb 2010, 10:16
Mine also D

I have a question here, do we really get such simple questions in real Gmat?
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Senior Manager
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12 Mar 2010, 13:20
msand wrote:
If x – y > 10, is x – y > x + y ?
a. x = 8
b. y = -20

OA :
[Reveal] Spoiler:
D

stmt1: x = 8 => 8-y >10 => y<-2 so x - y is always going to be greater than 10 and x+y is always going to be less than 6 hence x-y>x+y proved
stmt2: y = -20 => x+20>10=> x>-10 => x-y is always greater than 10 and x+y is always greater than -30 so how this is suff?
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Re: If x - y > 10, is x y > x + y ? [#permalink]

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15 Sep 2016, 03:50
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: If x - y > 10, is x y > x + y ?   [#permalink] 15 Sep 2016, 03:50
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