Problema Solution
A passenger train traveled
120
miles in the same amount of time it took a freight train to travel
70
miles. The rate of the freight train was
30
miles per hour slower than the rate of the passenger train. Find the rate of the passenger train
Answer provided by our tutors
Let
v = the rate of the passenger train, v>=0
v - 30 = the rate of the freight train, v - 30 >=0, v>=30
Since speed(rate) = distance/time follows time = distance/speed:
120/v = 70/(v - 30)
........
click here to see the equation solved for v
........
v = 72 mph
The rate of the passenger train was 72 mph.