Question

Автомобилист ехал по скоростной трассе со скоростью 128км/ч и потратил на дорогу 9 ч. Обратный путь занял у него 8ч. Вычисли скорость автомобилиста на обратном пути.

Answer 1

128*9=1152км(расстояние)
1152:8=144км/ч

Answer 2

Calculation of the Speed of the Driver on the Return Journey

To calculate the speed of the driver on the return journey, we need to use the formula:

Speed = Distance / Time

We know that the driver spent 9 hours on the outbound journey and 8 hours on the return journey. However, we don't have the distance traveled. Therefore, we need to find the distance first.

Calculation of the Distance Traveled

To find the distance traveled, we can use the formula:

Distance = Speed * Time

On the outbound journey, the driver traveled for 9 hours at a speed of 128 km/h. Using the formula, we can calculate the distance:

Distance = 128 km/h * 9 h = 1152 km.

On the return journey, the driver traveled for 8 hours. Now, we can calculate the speed using the formula:

Speed = Distance / Time

Speed = 1152 km / 8 h = 144 km/h

Therefore, the speed of the driver on the return journey was 144 km/h.

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