Question

Поезд прошел без остановок 420 км со скоростью 70 км/ч,затем он сделал остановку на 14 мин, а остальные 300 км прошел со скоростью 75 км/ч сколько времени было затрачено на весь путь?

Answer 1

Ответ 10 + 7/30

первая часть пути 420/70=6

вторая 14/60

третья 300/75=4

всего 10 + 7/30

Answer 2

Calculation of the Total Time Taken

To calculate the total time taken for the entire journey, we need to consider the time taken for each segment of the journey separately.

1. The train traveled 420 km without any stops at a speed of 70 km/h. 2. Then, the train made a stop for 14 minutes. 3. Finally, the train traveled the remaining 300 km at a speed of 75 km/h.

Let's calculate the time taken for each segment and then add them together to find the total time taken.

Time taken for the first segment

The distance traveled in the first segment is 420 km at a speed of 70 km/h. To calculate the time taken, we can use the formula:

Time = Distance / Speed

Substituting the values, we get:

Time = 420 km / 70 km/h = 6 hours

Time taken for the second segment

The train made a stop for 14 minutes, which is equivalent to 14/60 = 0.2333 hours.

Time taken for the third segment

The distance traveled in the third segment is 300 km at a speed of 75 km/h. Using the same formula as before, we can calculate the time taken:

Time = Distance / Speed

Substituting the values, we get:

Time = 300 km / 75 km/h = 4 hours

Total time taken

To find the total time taken, we need to add the time taken for each segment:

Total Time = Time taken for the first segment + Time taken for the second segment + Time taken for the third segment

Substituting the values, we get:

Total Time = 6 hours + 0.2333 hours + 4 hours = 10.2333 hours

Therefore, the total time taken for the entire journey is approximately 10.2333 hours.

Please note that the above calculation assumes that the train maintains a constant speed throughout each segment and that there are no other factors affecting the journey time.

Let me know if there's anything else I can help you with!