Teacher:In this task, you need to answer the given multiple-choice question on the physics. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Teacher: Now, understand the problem? Solve this instance: Problem: train a leaves the station traveling at 30 miles per hour . two hours later train leaves the same station traveling in the same direction at 35 miles per hour . how many miles from the station was train a overtaken by train b ?
Options: a ) 420 , b ) 450 , c ) 480 , d ) 510 , e ) 540
Student:
a