Question

№743 в 15 часов со станции вышел электропоезд со скоростью 80км/ч., а через 1 час с тойже станции вышел II поезд со скоростью 75км/ч.Какое растояние будет между ними в 18 часов. РЕШЕНИЕ И ОТВЕТ

Answer 1

1. 80*3=240
2. 75*2=150
3. 240-150=90
ответ: 90 км

Answer 2

To find the distance between the two trains at 18:00, we need to calculate the distance each train has traveled by that time.

Let's start with the first train. It left the station at 15:00 and has been traveling at a speed of 80 km/h for 3 hours (from 15:00 to 18:00). Therefore, the distance traveled by the first train is:

Distance of the first train = Speed × Time = 80 km/h × 3 hours = 240 km [[1]].

Now let's calculate the distance traveled by the second train. It left the same station at 16:00 and has been traveling at a speed of 75 km/h for 2 hours (from 16:00 to 18:00). Therefore, the distance traveled by the second train is:

Distance of the second train = Speed × Time = 75 km/h × 2 hours = 150 km [[2]].

To find the distance between the two trains at 18:00, we subtract the distance traveled by the second train from the distance traveled by the first train:

Distance between the two trains at 18:00 = Distance of the first train - Distance of the second train = 240 km - 150 km = 90 km.

Therefore, the distance between the two trains at 18:00 is 90 kilometers.