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National and Regional Contests
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MAA AMC
AMC 8
2015 AMC 8
20
20
Part of
2015 AMC 8
Problems
(1)
AMC 8 #20
Source: AMC 8
11/25/2015
Ralph went to the store and bought 12 pairs of socks for a total of \
24.
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24. Some of the socks he bought cost \$1 a pair, some of the socks he bought cost \$3 a pair, and some of the socks he bought cost \$4 a pair. If he bought at least one pair of each type, how many pairs of \$1 socks did Ralph buy?</br>
24.
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(A)
4 \qquad
(B)
5 \qquad
(C)
6 \qquad
(D)
7 \qquad
(E)
8 $
AMC 8