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Karishma123: Junior | Next Rank: 30 Posts; Posts: 11; Joined: Tue Jul 06, 2010 5:26 pm

by Karishma123 » Sun Nov 14, 2010 3:19 pm

Hi,

Can someone pelase help me out with this problem? Ans is E

Thank you

(I have attached the problem in the word document)

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Problem.docx: Question (Screen Shot); (55.53 KiB) Downloaded 130 times

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Source: Beat The GMAT — Problem Solving | Sun Nov 14, 2010 3:19 pm

Taniuca: Senior | Next Rank: 100 Posts; Posts: 62; Joined: Mon Aug 02, 2010 3:25 pm; Thanked: 3 times

by Taniuca » Sun Nov 14, 2010 5:00 pm

You must rewrite the question to a simpler way. From what I have learned from Kaplan, you must always try to rewrite what is being questioned.
xy+z= x(y+z)
xy+z= xy+xz
xy+z-xy-xz=0
z-xz=0
z(1-x)=0

so z must =0 and
1-x=0
1=x

Correct answer E

Good luck!

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