Question

Расстояние между двум деревнями равно 340 км.Автомобиль проехал половину пути со скоростью 58 км/час,а вторую половину со скоростью 49 км/с.Какова средняя скорость автомобиля на всем протяжении? Подскажите пожалуйста

Answer 1

$\frac{59+32}{2}$

Answer 2

Calculation of Average Speed

To calculate the average speed of the car over the entire distance, we need to find the total time taken for the journey and divide it by the total distance traveled.

Let's break down the problem step by step:

1. The total distance between the two villages is 340 km. 2. The car traveled the first half of the distance at a speed of 58 km/h. 3. The car traveled the second half of the distance at a speed of 49 km/h.

To find the average speed, we need to calculate the total time taken for the journey.

Calculation of Time Taken for the Journey

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

Time = Distance / Speed

1. The car traveled the first half of the distance (170 km) at a speed of 58 km/h. Therefore, the time taken for the first half of the journey is:

Time taken for the first half = 170 km / 58 km/h

2. The car traveled the second half of the distance (also 170 km) at a speed of 49 km/h. Therefore, the time taken for the second half of the journey is:

Time taken for the second half = 170 km / 49 km/h

3. Now, we can calculate the total time taken for the journey by adding the times taken for the first and second halves:

Total time taken = Time taken for the first half + Time taken for the second half

Calculation of Average Speed

To find the average speed, we can use the formula:

Average Speed = Total Distance / Total Time Taken

1. The total distance between the two villages is 340 km. 2. The total time taken for the journey is the sum of the times taken for the first and second halves.

Now, let's calculate the average speed using the given information.

Calculation Steps:

1. Calculate the time taken for the first half of the journey: - Distance: