Question

Поезд прошел за первый час 62км, за второй час-63км, за третий- 64,5км, за четвертый- 67, 5км. Найдите среднюю скорость поезда.

Answer 1

62+63+64.5+67.5=257 257:4=64.25 км

Answer 2

Calculation of Average Speed

To find the average speed of the train, we need to calculate the total distance traveled by the train and divide it by the total time taken.

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

- In the first hour, the train traveled 62 km. - In the second hour, the train traveled 63 km. - In the third hour, the train traveled 64.5 km. - In the fourth hour, the train traveled 67.5 km.

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

62 km + 63 km + 64.5 km + 67.5 km = 257 km

Now, let's calculate the total time taken:

The train traveled for 4 hours.

Now, we can calculate the average speed of the train by dividing the total distance by the total time:

Average speed = Total distance / Total time

Average speed = 257 km / 4 hours

Average speed = 64.25 km/h.

Therefore, the average speed of the train is 64.25 km/h.