标题: y一道数学题，答案有疑惑 [打印本页] 作者: huqingjun 时间: 2010-10-18 21:22 标题: y一道数学题，答案有疑惑 On a recent trip,Cindy drove her car 290 miles,rounded to the nearest 10miles,and used 12 gallons of gasoline,rounded to the nearest gallon.The actual number of miled per gallon that Cindy's car got on this trip must have been between? (A) 290/12.5 and 290/11.5 (B) 295/12 and 285/11.5 (C) 285/12 and 295/12 (D) 285/12.5 and 295/11.5 (E) 295/12.5 and 285/11.5