Two trains leave the same station at 7 AM and travel in opposite directions. At what time will the two trains be 31 km apart if one train traveled at 70 km/h and the other traveled at 85 km/h? *
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Answer:
Step-by-step explanation:
Relative velocity of one train be 70+85km/hr =155km/hr
Velocity=distance /time
Then time=distance/velocity
T=31/155 hr
1hr/5
T=12minutes
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