Question

Расстояние между городами А и В 240 км. Машина доехало от А до B 6часов. На сколько км/час должна побысить скорость машины что бы приехать обратно за 4часов.​

Answer 1

Ответ:

на 20 км/ч нужно увеличить скорость

Пошаговое объяснение:

1. 240 : 6 = 40 км/час скорость от города А до города Б

2. 240 : 4 = 60 км/ч должна быть скорость от города Б до города А

3. 60 - 40 = 20 км/ч нужно увеличить скорость

Answer 2

Calculation of Speed

To calculate the speed at which the car needs to travel in order to return from city B to city A in 4 hours, we can use the formula:

Speed = Distance / Time

Given that the distance between city A and city B is 240 km and the car took 6 hours to travel from city A to city B, we can calculate the initial speed of the car using the formula:

Speed = 240 km / 6 hours = 40 km/h.

To find the speed at which the car needs to travel to return from city B to city A in 4 hours, we can use the same formula:

Speed = Distance / Time

The distance is still 240 km, but the time is now 4 hours. Plugging in these values, we can calculate the required speed:

Speed = 240 km / 4 hours = 60 km/h.

Therefore, the car needs to maintain a speed of 60 km/h in order to return from city B to city A in 4 hours.