Question

Помогите решить задачу. За две целых две третьих часа водитель автомашины проехал по просёлочной дороге 108 км, а затем свернул на шоссе и поехал, увеличив скорость вдвое. С какой скоростью он двигался по шоссе?

Answer 1

1) 108 : 2 ( 2/3 ) = 108 : ( 8/3 ) = 40,5 ( км/час ) скорость по дороге
2) 40,5 * 2 = 81 ( км/час ) скорость по шоссе

Answer 2

Calculating the Speed on the Highway

To solve this problem, we can use the formula:

Speed = Distance / Time

First, let's calculate the time it took for the driver to travel 108 km on the country road.

Given: - Distance traveled on the country road = 108 km - Time taken on the country road = 2 2/3 hours

We can calculate the speed on the country road using the formula:

Speed = Distance / Time

Speed = 108 km / (2 2/3 hours)

Now, the driver doubles the speed when he turns onto the highway. Let's calculate the speed on the highway.

Calculating the Speed on the Highway

The driver doubled the speed when he turned onto the highway. Therefore, the speed on the highway is twice the speed on the country road.

Let's calculate the speed on the highway using the speed on the country road.

Speed on the highway = 2 * (Speed on the country road)

Now, we can substitute the calculated speed on the country road to find the speed on the highway.

Speed on the highway = 2 * (108 km / (2 2/3 hours))

Let's calculate the speed on the highway.