Question

Поезд шёл 8ч со скоростью 78 км/ч.Оставшуюся часть пути он шёл со скоростью 65 км/ч.На весь путь он затратил 15 ч. Какое расстояние прошёл поезд?

Answer 1

1 часть
S=V*t
расстояние 1 = 8ч * 78км/час=624 км
всего потратил 15 часов, значит на 2 часть пути потратил 15-8=7 часов
расстояние 2 = 7ч*65км/час=455 км
всего = 624+455=1079 км

Answer 2

Calculation of Distance Traveled by the Train

To calculate the distance traveled by the train, we can use the formula:

Distance = Speed × Time

Let's break down the given information and calculate the distance traveled by the train.

Given: - The train traveled for a total of 15 hours. - For the first 8 hours, the train traveled at a speed of 78 km/h. - For the remaining hours, the train traveled at a speed of 65 km/h.

To calculate the distance traveled during the first 8 hours: Distance1 = Speed1 × Time1

Substituting the values: Distance1 = 78 km/h × 8 h

To calculate the distance traveled during the remaining hours: Distance2 = Speed2 × Time2

Substituting the values: Distance2 = 65 km/h × (15 h - 8 h)

Finally, we can calculate the total distance traveled by adding the distances from the two parts of the journey: Total Distance = Distance1 + Distance2

Let's calculate the distances:

Distance1 = 78 km/h × 8 h = 624 km Distance2 = 65 km/h × (15 h - 8 h) = 455 km Total Distance = Distance1 + Distance2 = 624 km + 455 km = 1079 km

Therefore, the train traveled a distance of 1079 km.

Please note that the calculations are based on the given information and assumptions.