Two trains left at the same time towards each other from the station, located at a distance of 660 km.

Two trains left at the same time towards each other from the station, located at a distance of 660 km. One train moves at 40 km / h, another 70 km / h. In how many hours will the trains meet? At what distance from each of the departure stations will the meeting take place?

1) What is the speed of the convergence of trains? (If trains are moving towards each other, then in order to find the speed of convergence, you need to add the speeds of the trains.)
40 + 70 = 110 (km / h)
2) How long were the trains on the way before they met? (To find the time, the distance traveled must be divided by the speed. Trains covered a total distance of 660 km, with a total approach speed of 110 km / h.)
660: 110 = 6 (h)
3) How many kilometers did the first train go before the meeting? (To find the distance traveled, you need to multiply the speed by time.)
40 * 6 = 240 (km)
4) How many kilometers did the second train travel before the meeting?
70 * 6 = 420 (km)
(The distance traveled by the second train can be found differently. Subtract the distance traveled by the first train from the distance between stations. 660 – 240 = 420 (km)).
The distances traveled by each train are the distances from the meeting point to the stations.
Answer. 6 h, 240 km, 420 km.