danielaaa100 danielaaa100

26-09-2017
Mathematics

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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

Respuesta :

liemonder liemonder

26-09-2017

you can add the times together and calculate the speed over the full length, because both trains have the same speed
[tex]speed=rate=\frac{distance}{time}\\ \frac{562.5}{3.5+4} = \frac{562.5}{7.5}=75 mph[/tex]

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