Question

Автомобиль проехал половину пути со скоростью 60 км/ч, оставшуюся часть пути он половину времени двигался со скоростью 10 км/ч, а последний участок – со скоростью 20 км/ч. Какова средняя скорость автомобиля на всем пути? Ответ дайте в км/ч.

Answer 1

(60+10+20):3=30км/час---средняя скорость автомобиля на всем пути.

Answer 2

Calculating the Average Speed of the Car

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

Average Speed = Total Distance / Total Time

Let's break down the journey into segments and calculate the total distance and total time for each segment.

1. First Segment: - The car traveled half the distance at a speed of 60 km/h. - Let's denote the distance traveled in this segment as d1 and the time taken as t1.

2. Second Segment: - The car traveled the remaining half of the distance at a speed of 10 km/h for half the time and at a speed of 20 km/h for the other half. - Let's denote the distance traveled in this segment as d2 and the time taken as t2.

3. Calculating Total Distance: - The total distance traveled is the sum of d1 and d2.

4. Calculating Total Time: - The total time taken is the sum of t1 and t2.

Calculating the Total Distance

The total distance traveled can be calculated by adding d1 and d2.

Calculating the Total Time

The total time taken can be calculated by adding t1 and t2.

Calculating the Average Speed

Using the formula Average Speed = Total Distance / Total Time, we can calculate the average speed of the car for the entire journey.

Let's proceed with the calculations.