Sum of X

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deepoe: Master | Next Rank: 500 Posts; Posts: 151; Joined: Wed Feb 11, 2009 2:45 am; Thanked: 3 times

by deepoe » Tue Mar 03, 2009 11:06 am

If the sum of X and 20 is 8 more than the difference of 10 and Y, what is the value of x + y?

A. -2
B. 8
C. 9
D. 29
E. Can't be determine

Source: Beat The GMAT — Problem Solving | Tue Mar 03, 2009 11:06 am

Rag_gmat: Newbie | Next Rank: 10 Posts; Posts: 6; Joined: Wed Oct 15, 2008 6:18 am

by Rag_gmat » Tue Mar 03, 2009 11:33 am

IMO -2

lilu: Master | Next Rank: 500 Posts; Posts: 148; Joined: Wed Dec 10, 2008 5:13 pm; Location: SF, CA; Thanked: 12 times

by lilu » Tue Mar 03, 2009 11:39 am

So, putting it in an equation form:
x+20=10-y+8
Solving this equation gives us:
x+y=10-20+8=-2

Answer is A

quocbao: Senior | Next Rank: 100 Posts; Posts: 88; Joined: Tue Mar 03, 2009 8:10 am; Thanked: 3 times

by quocbao » Tue Mar 03, 2009 7:50 pm

My answer is -2 too, let pick A

Dream Weaver: Senior | Next Rank: 100 Posts; Posts: 37; Joined: Sun Mar 01, 2009 12:34 am; Location: Alpharetta, GA

by Dream Weaver » Tue Mar 03, 2009 9:43 pm

IMO -2, Pretty simple.

Please post OA.

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