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DS: DISTANCE

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DS: DISTANCE

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: — Data Sufficiency |
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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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