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Are both x and y > 0

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Source: — Data Sufficiency |
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by aidami » Sat Jan 28, 2012 1:10 am
1. 2(x-y) =1
x-y = 1/2 insufficient

2. x/y > 1

x>y when y > 0
x<y when y< 0 insufficient

TOGETHER x-y =1/2 ==> x>y

From 2 x>y when y>0 so x>0 answer C
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by GMATGuruNY » Sat Jan 28, 2012 4:51 am
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