Question

Автомобіль за першу годину проїхав 59(1/5)км, за другу годину 67(3/4)км, а за третю 83(1/2)км. Знайдіть середню швидкість руху автомобіля.(Відповідь округли до десятих км/год)

Answer 1

Ответ: 70 13/20 или 70/65км/год

Пошаговое объяснение:

(59 1/5+67 3/4+83 1/2)÷3=211,95÷3=70,65км/год

Answer 2

Calculation of Average Speed

To find the average speed of the car, we need to divide the total distance traveled by the total time taken.

Let's calculate the total distance traveled by the car:

- In the first hour, the car traveled 59(1/5) km. - In the second hour, the car traveled 67(3/4) km. - In the third hour, the car traveled 83(1/2) km.

To find the total distance, we add up these distances:

59(1/5) km + 67(3/4) km + 83(1/2) km = 59.2 km + 67.75 km + 83.5 km = 210.45 km

Now, let's calculate the total time taken:

Since the car traveled for three hours, the total time taken is 3 hours.

To find the average speed, we divide the total distance by the total time:

Average Speed = Total Distance / Total Time

Average Speed = 210.45 km / 3 hours

Average Speed ≈ 70.15 km/h

Therefore, the average speed of the car is approximately 70.15 km/h.