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Tasya [4]
3 years ago
11

Two trains on opposite tracks leave the same station at the same time. One train travels at an average speed of 80 kilometres pe

r hour and the other travels at an average speed of 70 kilometres per hour. How long after they leave the station will they be 50 km apart?
Mathematics
1 answer:
GREYUIT [131]3 years ago
7 0

9514 1404 393

Answer:

  20 minutes

Step-by-step explanation:

The trains are separating at the rate of 80 +70 = 150 km/hour. The time required to be 50 km apart is then ...

  time = distance/speed = (50 km)/(150 km/h) = 1/3 h = 20 minutes

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