gmat prep

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gmat prep

by smallsorrow » Sat Sep 20, 2008 1:03 am
Is x < 20?
1. sum of x and y is < 20
2. y is less than 20

OA follows

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by P_mashru » Sat Sep 20, 2008 1:54 am
imo e
I am I

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by sumithshah » Mon Sep 22, 2008 10:35 am
I get C

from 1 : X+Y < 20
From 2 : y<20

Subtract 2 from 1

X<0

Hence, x<20

Whats the OA?

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by smithpa2 » Mon Sep 22, 2008 10:56 am
IMO E.

Y could be both positive or negative.

For example:

x=25 y=-10, then x+y<20
x=15, y=1, then x+y<20

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by mals24 » Mon Sep 22, 2008 11:15 am
E for me as well

St 1 x+y<20

x=35, y=-18 x>20
x+y = 17<20

x=-25, y=7 x<20
x+y=-18<20------INSUFF

St 2 y<20
Same as one we can two situations----INSUFF

Combining 1&2
Same as St 1----INSUFF

Answer is E