Question

расстояние между городами 240 км автобус прошел его за 4 часа на обратном пути Скорость автобуса уменьшилась на 20 км ч Сколько времени у его заняла обратная дорога

Answer 1

240:4=60км это за 1 час
60-20=40км столько километров будет про издать за 1 час на обратной дороге
240:40=6 часов займёт обратная дорога
Ответ :6 часов

Answer 2

Calculation of Time for the Return Journey

To calculate the time taken for the return journey, we need to determine the speed of the bus on the return trip. We know that the distance between the cities is 240 km and the bus took 4 hours to cover this distance on the initial trip. On the return trip, the speed of the bus decreased by 20 km/h.

Let's calculate the speed of the bus on the initial trip:

Speed = Distance / Time Speed = 240 km / 4 hours Speed = 60 km/h

Now, let's calculate the speed of the bus on the return trip:

Speed on return trip = Speed on initial trip - Decrease in speed Speed on return trip = 60 km/h - 20 km/h Speed on return trip = 40 km/h

To find the time taken for the return journey, we can use the formula:

Time = Distance / Speed Time = 240 km / 40 km/h Time = 6 hours

Therefore, the return journey took the bus 6 hours.