SOLUTION: two trains leave boston at 2pm heading in opposite directions . one train is headed due north at 50 mph while the second train is headed due south at 40 mph. what time will it be w

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Question 987063: two trains leave boston at 2pm heading in opposite directions . one train is headed due north at 50 mph while the second train is headed due south at 40 mph. what time will it be when the trains are 495 miles apart?

Found 2 solutions by Boreal, macston:
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The trains are going in opposite directions and are moving apart at the sum of their speeds, or 90 mph.
They will be 495 miles apart in 495/90 mi/mi/hr, units hr. That is in 5.5 or 5 1/2 hours.

Answer by macston(5194) About Me  (Show Source):
You can put this solution on YOUR website!
.
The trains are separating at:
50mph+40mph=90mph
.
To reach 495 miles apart at 90 mph:
495mi/90mph=5.5 hours
.
5.5 hours after 2:00 PM is 7:30 PM.
.
ANSWER: The trains will be 495 miles apart at 7:30 PM.