Question

1. Первые 9 км автобус проехал со скоростью 36 км / ч, а следующие 24 км - со скоростью 54 км / ч. Какая средняя скорость автобуса? (47 км / ч.)​

Answer 1

Ответ:

средняя скорость автобуса = (36+54)/2=45км/ч

Answer 2

Calculation of Average Speed

To calculate the average speed of the bus, we need to find the total distance traveled and the total time taken.

The bus traveled the first 9 km at a speed of 36 km/h and the next 24 km at a speed of 54 km/h.

The total distance traveled is 9 km + 24 km = 33 km.

To find the total time taken, we can divide the distance traveled by the respective speeds:

- Time taken for the first 9 km: 9 km / 36 km/h = 0.25 hours - Time taken for the next 24 km: 24 km / 54 km/h = 0.44 hours

The total time taken is 0.25 hours + 0.44 hours = 0.69 hours.

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

Average speed = Total distance / Total time = 33 km / 0.69 hours ≈ 47.83 km/h.

Therefore, the average speed of the bus is approximately 47.83 km/h.