Question

Автомобилист ехал по скоромной трассе со скоростью 128км/ч и потратил на дорогу 9 ч обратный путь занял у него 8 км/ч вычислить скорость автомобилиста на обратную дорогу

Answer 1

(128*9):8=144(км/ч) 
Ответ: 144 км/ч.

Answer 2

128*9=1152км // S=Vt
1152:8=144км/ч // V=S/t

Answer 3

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

Let's denote the speed of the driver on the forward journey as S1 (128 km/h) and the time taken for the forward journey as T1 (9 hours). Similarly, let's denote the speed of the driver on the return journey as S2 and the time taken for the return journey as T2 (8 hours).

We can set up the following equation based on the formula mentioned above:

S2 = Distance / T2

To find the distance, we can use the formula:

Distance = Speed * Time

Substituting the values, we have:

Distance = S1 * T1

Now, let's substitute the values into the equation to find the speed of the driver on the return journey:

S2 = (S1 * T1) / T2

Calculating the value:

S2 = (128 km/h * 9 hours) / 8 hours

S2 = 144 km/h

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