Question

Грузовая машина проехала 336 км со скоростью 42 км/ч. На обратный путь машина затратила на 1 ч меньше. С какой скоростью ехала машина обратно?

Answer 1

336:42=8(год) 8-1=7(год) 336:7=48 (км) 

Answer 2

1. 336:4=8 (ч) находилась машина в пути.

2. 8-1 = 7 (ч). Затратила машина на обратный путь.

336:7 = 48 (км/ч).

Ответ: Скорость машины на обратном пути 48 км/ч

Answer 3

Problem Analysis

We are given that a truck traveled a distance of 336 km with a speed of 42 km/h. On the return journey, the truck took 1 hour less to cover the same distance. We need to find the speed of the truck on the return journey.

Solution

Let's assume the speed of the truck on the return journey is x km/h.

To find the speed of the truck on the return journey, we can use the formula:

Speed = Distance / Time

We know that the distance covered by the truck on both the forward and return journeys is 336 km. Let's calculate the time taken for each journey.

Forward Journey:

Speed = 42 km/h Distance = 336 km

Using the formula, we can calculate the time taken for the forward journey:

Time = Distance / Speed = 336 km / 42 km/h = 8 hours

Return Journey:

Speed = x km/h Distance = 336 km

We are given that the truck took 1 hour less on the return journey. Therefore, the time taken for the return journey is 1 hour less than the time taken for the forward journey:

Time = 8 hours - 1 hour = 7 hours

Using the formula, we can calculate the speed of the truck on the return journey:

Speed = Distance / Time = 336 km / 7 hours = 48 km/h

Answer

The truck traveled at a speed of 48 km/h on the return journey.

Please let me know if I can help you with anything else.