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Source: — Data Sufficiency |
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by cans » Thu Jun 09, 2011 7:43 am
x-y>10
x-y>x+y? or 2y<0 or y<0??
a)x=8
8-y>10
y<-2
as y<0
Sufficient
b) y=-20
y<0
Sufficient
IMO D
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by phanideepak » Thu Jun 09, 2011 8:19 pm
x-y>10 is x-y > x+y ?

1 : 8-y > 10 so y < -2 since y is less than 0 x-y is always greater than 0 for all values of x

2: Similarly this is also sufficient so

IMO answer is D
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by smackmartine » Fri Jun 10, 2011 12:50 am
IMO D
x-y > 10, Asked if x-y > x + y or 2y<0 or y<0 ?

1 : x = 8 => 8-y >10 => -y> 2 => y< -2 ,Suff
2 : y = -20 ,y<0 , so suff
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by vzzai » Fri Jun 10, 2011 5:38 am
Would agree with all the above. D it is.
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by goalevan » Wed Jun 15, 2011 7:15 pm
Hi all, new member here. Just want to point out the following: I read the question stem and translated the inequality x-y > x+y to -y > y , or in words "y is negative". Kind of makes it simpler and more concrete. After that point the answer is painfully obvious.
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