Question

Расстояние от Перми до Казни,равное 723 километров,автомобиль проехал за 13 часов.Первые 9 часов он ехал со скоростью 55 километров в час.Определи скорость автомобиля в оставшееся время.

Answer 1

1) 9*55=495(км)- проехал за 9 часов

2) (723-495): (13-9)=57 (км/ч) -скорость в оставшееся время

ответ: 57 км/ч

Answer 2

Problem Analysis

We are given the following information: - Distance from Perm to Kazan: 723 kilometers - Time taken to travel: 13 hours - Speed for the first 9 hours: 55 kilometers per hour

We need to determine the speed of the car for the remaining time.

Solution

To find the speed of the car for the remaining time, we can use the formula:

Speed = Distance / Time

Let's calculate the speed for the first 9 hours:

Speed for the first 9 hours = Distance / Time = 723 km / 9 hours = 80.33 km/h

Now, we can calculate the remaining time:

Remaining time = Total time - Time for the first 9 hours = 13 hours - 9 hours = 4 hours

To find the speed for the remaining time, we can use the formula:

Speed = Distance / Time

Substituting the values:

Speed for the remaining time = Distance / Remaining time = 723 km / 4 hours = 180.75 km/h

Therefore, the speed of the car for the remaining time is 180.75 km/h.

Answer

The speed of the car for the remaining time is 180.75 km/h.