Question

Train A and train B leave a central station at the same time. They travel the same speed, but in opposite directions, with train A heading towards station A, and train B heading towards station B. Train A reaches station A after 4 h. Train B reaches station B after 3 1/2 h. Station A and station B are 562.5 mi apart. What is the rate of the trains?

Answer mph

Answer 1

you can add the times together and calculate the speed over the full length, because both trains have the same speed

`speed=rate=(distance)/(time)\\ (562.5)/(3.5+4) = (562.5)/(7.5)=75 mph`