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Problems
Contests
National and Regional Contests
USA Contests
MAA AMC
AMC 8
2010 AMC 8
12
12
Part of
2010 AMC 8
Problems
(1)
2010 AMC 8 #12
Source:
5/21/2011
Of the
500
500
500
balls in a large bag,
80
%
80\%
80%
are red and the rest are blue. How many of the red balls must be removed so that
75
%
75\%
75%
of the remaining balls are red?
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100
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<span class='latex-bold'>(A)</span>\ 25 \qquad<span class='latex-bold'>(B)</span>\ 50\qquad<span class='latex-bold'>(C)</span>\ 75\qquad<span class='latex-bold'>(D)</span>\ 100\qquad<span class='latex-bold'>(E)</span>\ 150
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150