2. 外语
  3. A car averages 40 miles per hour for the first 6 hours of a trip and averages 60 miles per hour for each additional hour of trav

A car averages 40 miles per hour for the first 6 hours of a trip and averages 60 miles per hour for each additional hour of trav

admin2021-10-21  32
问题 A car averages 40 miles per hour for the first 6 hours of a trip and averages 60 miles per hour for each additional hour of travel time, if the average speed for the entire trip is 55 miles per hour, how many hours long is the trip?
选项 A、8
B、18
C、24
D、12
E、16
答案C
解析 本题考查行程问题。设一共行驶n小时，那么40×6+60×(n-6)=55n，得到n=24。
转载请注明原文地址:https://jikaoti.com/ti/qDzYFFFM
本试题收录于： GMAT QUANTITATIVE题库GMAT分类
0

GMAT QUANTITATIVE

GMAT

相关试题推荐
随机试题
最新回复(0)