您还没有登录,登录以后才可以查看答疑和进行提问。

试题详情

Working at their respective constant rates, machine  makes 240 copies in 8 minutes and machine  makes 240 copies in 5 minutes. At these rates, how many more copies does machine  make in 4 minutes than machine  makes in 6 minutes?
答案:B

专业教师答疑

问个问题