7.5 上海MATH
First 1/7 mile 1.52$, addtional 1/7 MILE 0.33$, 一共4.6MILE, 一共要花多少钱?
某地对车燃油征税,first 1/7 mile 1.52$,超过的部分每1/7 mile and parts thereof 征0.33$,问4.6 mile 应征多少税? 参考答案:12.08 思路:4.6*7=32.2, and 1.52+0.33*32=12.08
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