What is the maximum number of 1~$\frac{1}{4}$~ foot pieces of wire that can be cut from a wire that is 24 feet long?


11

18

19

20

30

考题讲解
题目分析:
总长度除以每个子电线的长度,就是剪的个数:~$\frac{24}{1\frac{1}{4}}$~=~$19\frac{1}{5}$~. 最多就是 19 个。
综上:答案就是 C.

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