taxi fare is $1.00 for the first 1/2 mile and $0.35 for each additional 1/2 mile. How many miles can a passenger ride for $3.10?
应该的多少?怎么做
答案为什么说是3.5
如果是3.5米的话,减去首次0.5米,还有3米,单价是0.35美元,3×0.35=1.05美元,1.05+1=2.05美元,与题目的3.1美元不符合。题目答案出错也是有可能的。