SOLUTION: Two trains leave a station at the same time, heading in opposite directions. One train is traveling at 80 km/h and the other at 90 km/h. How long will it take for the trains to be

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Question 654954: Two trains leave a station at the same time, heading in opposite directions. One train is traveling at 80 km/h and the other at 90 km/h. How long will it take for the trains to be 425 km apart?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
D=RT
425=80T+90T
425=170T
T=425/170
2.5 HOURS THEY WILL BW 425 MILES APART.
PROOF:
425=80*2.5+90*2.5
425=200+225
425=425