The train ran for 2 hours 20 minutes. at a speed of 70 km / h and the same amount of time – at a speed of 65 km / h.

| January 13, 2021 | education

The train ran for 2 hours 20 minutes. at a speed of 70 km / h and the same amount of time – at a speed of 65 km / h. How many kilometers did the train travel?

1. According to the condition of the problem, the train ran for 2 hours and 20 minutes at a speed of 70 km / h.
Let’s determine the distance that he covered during this time.
First, let’s simplify the amount of time for calculations.
2 hours 20 minutes = 2 20/60 hours = 2 1/3 hours = 7/3 hours.
7/3 * 70 = 490/3 km.
2. Further in the problem it is said that for the same amount of time the train moved at a speed of 65 km / h.
Let’s calculate the length of the path traveled on this interval.
65 * 7/3 = 455/3 km.
3. Find the total distance traveled by the train.
490/3 + 455/3 = 315 km.
Answer: The train covered 315 km.



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