Question

Автомобиль ехал 3 ч. со скоростью 56,4 км/ч и 4 ч.со скоростью 62,7 км/ч. Найдите среднюю скорость автомобиля на всеми пути.

Answer 1

56,4*3=169,2км за три часа
62,7*4=250,8км за четыре часа
169,2+250,8=420км всего проехал
3+4=7 часов ехал
420:7=60км/час средняя скорость

Answer 2

3 ч * 56,4 км/ч = 169,2 км
4 ч * 62,7 км/ч = 250,8 км
250,8 км + 169,2 км = 420 км весь пройденный путь
3 ч + 4 ч = 7 ч всего времени в пути
420 км / 7 ч = 60 км/ч средняя скорость на всем участке пути

Answer 3

Calculating Average Speed of a Car

To find the average speed of the car for the entire journey, we can use the formula:

Average Speed = Total Distance / Total Time

First, let's calculate the total distance covered by the car.

The car traveled for 3 hours at a speed of 56.4 km/h and for 4 hours at a speed of 62.7 km/h.

The total distance can be calculated as:

Total Distance = (Speed1 * Time1) + (Speed2 * Time2)

Where: - Speed1 = 56.4 km/h - Time1 = 3 hours - Speed2 = 62.7 km/h - Time2 = 4 hours

Total Distance = (56.4 km/h * 3 hours) + (62.7 km/h * 4 hours)

Total Distance = (169.2 km) + (250.8 km)

Total Distance = 420 km

Now, we can calculate the average speed using the formula mentioned earlier:

Average Speed = Total Distance / Total Time

Total Time = 3 hours + 4 hours = 7 hours

Average Speed = 420 km / 7 hours

Average Speed = 60 km/h

Therefore, the average speed of the car for the entire journey is 60 km/h.