2. 外语
  3. Two trains running on parallel tracks are 600 miles apart. One train is moving east at a speed of 90 mph, while the other is mov

Two trains running on parallel tracks are 600 miles apart. One train is moving east at a speed of 90 mph, while the other is mov

admin2013-02-19  14
问题 Two trains running on parallel tracks are 600 miles apart. One train is moving east at a speed of 90 mph, while the other is moving west at 75 mph. How long will it take for the two trains to pass each other?
选项
答案3.64 hours
解析 This is a standard Rate × Time = Distance problem. Since the two trains start 600 miles apart, the combined distance traveled by both trains must equal 600. Using the R × T = D formula, you know that(Rate of Train 1 × Time of Train 1)+(Rate of Train 2 x Time of Train 2)= 600. You are given that the rate of travel is 90 mph for the first train and 75 mph for the second train, and the distance traveled is 600 miles; therefore, you must solve for T, as follows:
90T+ 75T= 600
165T= 600
T =(approximately)3.64 hours
转载请注明原文地址:https://www.kaotiyun.com/show/VVkO777K
本试题收录于： GRE QUANTITATIVE题库GRE分类
0

GRE QUANTITATIVE

GRE

相关试题推荐
随机试题
最新回复(0)