Question

Путешественники проехали всего 860км,из них на автобусе на 460 км меньше,чем на поезде.Сколько часов они были в пути ,если скорость автобуса-50км/ч,а поезда-66км/ч?

Answer 1

1) (860-460)/2=200 (км) - на автобусе 
2) 200+460=660 (км) проехали на поезде 
3) 200/50+660/66 =14 (ч)

Ответ: 14 часов путешественники 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

To find the total time, we can use the formula: time = distance / speed.

Let's calculate the time spent on the bus and the train separately and then add them together to find the total time.

1. Time spent on the bus: - Distance covered by the bus = 860 km - 460 km = 400 km - Speed of the bus = 50 km/h - Time spent on the bus = 400 km / 50 km/h = 8 hours

2. Time spent on the train: - Distance covered by the train = 860 km - Speed of the train = 66 km/h - Time spent on the train = 860 km / 66 km/h ≈ 13.03 hours (rounded to two decimal places)

3. Total time spent: - Total time spent = Time spent on the bus + Time spent on the train = 8 hours + 13.03 hours ≈ 21.03 hours (rounded to two decimal places)

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