The first two hours the car drove at a speed of 50 km / h, the next hour – at a speed of 100 km / h, and then two hours

The first two hours the car drove at a speed of 50 km / h, the next hour – at a speed of 100 km / h, and then two hours – at a speed of 75 km / h. Find the average speed of the car along the way.

To find the average speed, you need to divide the entire path by all the time:
(50 * 2 + 100 * 1 + 75 * 2) 🙁 2 + 1 + 2) = (100 + 100 + 150): 5 = 350: 5 = 70 (km / h)
Answer: the average speed of the car along the entire path is 70 km / h