Asked by angie

a train left podunk and traveled north at 75 km/h. two hours later, another train left podunk and traveled in the same direction at 100 km/h. how many hours had the first train traveled when they were 1420 km apart?
Answered by Reiny
When they are 1420 km apart let the time taken by the first train be t hrs,
then the time taken by the second train be t-2 hrs

distance traveled by 1st train = 75t
distance traveled by 2nd train = 100(t-2)

what do you know about the two distances?
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