Data Sufficiency :: Patio + Swimming poll (sets)
Author: 4meonly
Subject: Patio + Swimming poll (sets)
Posted: Tue Dec 02, 2008 12:14 am (GMT -8)
Guys,
please check my thinking
OA B
75 = (have patio)+(have pool)-(have patio and pool)+(do not have patio and pool)
Main stem:
75 = (48)+(have pool)-(have patio and pool)+(do not have patio and pool)
Question: (have pool) = ?
(1)
only patio = 38, therefore (have patio and pool)=10
75 = (38)+(have pool)-(10)+(do not have patio and pool)
Question: (have pool) = ?, we do not know (do not have patio and pool).
INSUFF
(2)
(have patio and pool)=(do not have patio and pool) let it be x
75 = (48)+(have pool)-x+x
75 = (48)+(have pool)
(have pool)=27
SUFF
B
I dont know why, but i fell i am not correct 
Fell I became very suspicious 
_________________
30.11.2008: GMATPrep 730 (Q51/V36) – moving to verbal
01.12.2008: GMATPrep 750 (Q50/V41)
Tags: Data Sufficiency, Main Stem, Patio Sets, Poll, Pool 10, Swimming, V36, V41