Question

Путешественники проехали всего 860 км,из них на автобусе на 460 км меньше,чем на поезде.Сколько часов они были в пути,если скорость автобуса 50 км/ч,а поезда 66 км/чГармония Н. Б. Истомина №240

Answer 1

1)860-460=400 км
2)400:2=200 км - на автобусе 
3)200+460=660 км - на поезде
3)200:50=4 км - на автобусе
4)660:66=10 ч - на поезде
5)10+4=14 ч - были в пути

Answer 2

Problem Analysis

We are given that a group of travelers covered a total distance of 860 km. The distance covered by the bus is 460 km less than the distance covered by the train. The speed of the bus is 50 km/h, and the speed of the train is 66 km/h. We need to find the total time the travelers spent on their journey.

Solution

Let's calculate the time taken by the bus and the train separately and then add them to find the total time.

The time taken by the bus can be calculated using the formula: time = distance / speed.

The distance covered by the bus is 460 km less than the distance covered by the train. So, the distance covered by the bus is 860 km - 460 km = 400 km.

Substituting the values into the formula, we get: time taken by the bus = 400 km / 50 km/h = 8 hours.

The time taken by the train can also be calculated using the same formula: time = distance / speed.

The distance covered by the train is 860 km.

Substituting the values into the formula, we get: time taken by the train = 860 km / 66 km/h ≈ 13.03 hours.

Now, we can find the total time taken by adding the time taken by the bus and the time taken by the train: total time = 8 hours + 13.03 hours ≈ 21.03 hours.

Therefore, the travelers were in transit for approximately 21.03 hours.

Answer

The travelers were in transit for approximately 21.03 hours.

Explanation

The total distance covered by the travelers was 860 km. The distance covered by the bus was 400 km, and the distance covered by the train was 860 km. The speed of the bus was 50 km/h, and the speed of the train was 66 km/h. By calculating the time taken by the bus and the train separately and adding them, we found that the total time taken by the travelers was approximately 21.03 hours.