数学:说什么不管面额多大,纸币的厚度都一样,$1000,000 amount of $20是17feet11inch ,那么$6000,000,000的 $100多厚,选项单位都是feet,我算出来是20532 feet,但是没这个选项, 于是选了最接近的25000(后三位忘了), inch和feet之间难道不是十进制?
还有一个说 前一年的amout was n less than the amount in last two years,求n.然后(1)amount was 23%(反正是个比例) less than the amount in last two years,(2)说amount in last two years was jiji% more than last year.... 选了1行2不行... n确定(1)的写法和题目里的一样,就是把n换成了一个百分比,n可以直接得出嘛?! 确定没有规定n的范围。