Question

Поїзд повинен проїхати відстань у 800 км. Перші 10 год він рухався зі швидкістю 38 км/год, а потім збільшив швидкість і решту шляху проїхав за 7 год. З якою швидкістю рухався поїзд решту шляху?

Answer 1

1)10*38=380(км)-за 10 год.
2)800-380=420(км)-за 7 год
3)420/7=60(км/год)
Відповідь 60 км/год

Answer 2

Calculation of Train Speed

To find the speed at which the train traveled the remaining distance, we can use the formula:

Speed = Distance / Time

Given that the train traveled a total distance of 800 km and took 10 hours to cover the first part of the distance at a speed of 38 km/h, we can calculate the remaining distance as follows:

Remaining Distance = Total Distance - Distance Covered in the First Part

Remaining Distance = 800 km - (38 km/h * 10 h)

Remaining Distance = 800 km - 380 km

Remaining Distance = 420 km

The train covered the remaining distance of 420 km in 7 hours. To find the speed at which it traveled this distance, we can use the formula mentioned above:

Speed = Remaining Distance / Time

Speed = 420 km / 7 h

Speed = 60 km/h

Therefore, the train traveled the remaining distance at a speed of 60 km/h.