Two trains set off simultaneously towards each other tz two cities. The speed of 1 train is 85 km / h

| July 18, 2021 | education

Two trains set off simultaneously towards each other tz two cities. The speed of 1 train is 85 km / h, and the speed of 2 trains is 60 km / h. 3 hours after departure between these trains was equal to 290 km. Find the distance between these cities. In how many hours. will they meet after the train departs?

It is known V = S: T. Let’s find the path of each train in 3 hours:

S1 = V1 * T = 85 * 3 = 255 km
S2 = V2 * T = 60 * 3 = 180 km

To find out the distance between cities, we add the distances traveled by trains, as well as between them:

255 + 180 + 290 = 725 km

We will find out how long it will take for the trains to cover 290 km. Let’s divide the value by the sum of the speeds:

290 / (V1 + V2) = 290 / (85 + 60) = 290: 145 = 2 h

Let’s calculate the time before the meeting:

3 + 2 = 5 h

Answer: between cities 725 km. The trains will meet after 5 hours of movement.



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