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2010 AMC 10A
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Mary's top book shelf holds five books with the following widths, in centimeters:
6
6
6
,
1
2
\frac{1}{2}
2
1
,
1
1
1
,
2.5
2.5
2.5
, and
10
10
10
. What is the average book width, in centimeters?
A
1
1
1
B
2
2
2
C
3
3
3
D
4
4
4
E
5
5
5
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