DS: DISTANCE

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[email protected]: Senior | Next Rank: 100 Posts; Posts: 87; Joined: Sun Jul 24, 2011 10:36 am

by [email protected] » Tue Sep 13, 2011 9:41 am

Q: ON THE NO. LINE, SHOWN BELOW, IS ZERO HALF-WAY BETWEEN A AND B ?

------A------B------C------

A: POINT B IS TO THE RIGHT OF ZERO
B: THE DISTANCE BETWEEN THE POINT C AND A IS SAME AS THE DISTANCE BETWEEN THE
POINT C AND POINT -B ?

MY ANSWER IS B

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Source: Beat The GMAT — Data Sufficiency | Tue Sep 13, 2011 9:41 am

cans: Legendary Member; Posts: 1309; Joined: Mon Apr 04, 2011 5:34 amFollowed by: 123 members; Location: India; Thanked: 310 times; GMAT Score:750

by cans » Tue Sep 13, 2011 10:01 am

A B C
is a=-b?? (zero half way between A and B)
a) b >0. Insufficient
b) if B>0, then A=-B. but if B<0, -B>0 then we will have: A B C -B..
Insufficient
a&b) b>0, thus A=-B.
Sufficient
IMO C

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