Question

Туристы отправились на прогулку на катере,Они проплыли 36 км по течению реки сделали привал на 3 ч и затем вернулись обратно. Сколько времени заняла вся прогулка, если собственная скорость течения реки 3 км ч?

Answer 1

Время туда: 36/(15+3)=2часа.
Обратно 36/(15-3)=3часа
Общее время3+2+3=8часов

Answer 2

Calculation of the Total Duration of the Trip

To calculate the total duration of the trip, we need to consider the distance traveled by the tourists and the speed of the river's current.

Given: - Distance traveled by the tourists: 36 km - Speed of the river's current: 3 km/h

To calculate the time taken to travel downstream, we can use the formula:

Time = Distance / (Speed of the boat + Speed of the current)

In this case, the speed of the boat is the speed at which the tourists are traveling relative to the water, and the speed of the current is the speed at which the water is flowing.

Let's calculate the time taken to travel downstream:

Time downstream = 36 km / (Speed of the boat + Speed of the current)

Substituting the given values:

Time downstream = 36 km / (Speed of the boat + 3 km/h)

Now, let's calculate the time taken to travel upstream. Since the boat is traveling against the current, the effective speed of the boat will be reduced by the speed of the current. Therefore, the formula becomes:

Time = Distance / (Speed of the boat - Speed of the current)

Let's calculate the time taken to travel upstream:

Time upstream = 36 km / (Speed of the boat - Speed of the current)

Finally, to calculate the total duration of the trip, we add the time taken to travel downstream, the time taken for the break, and the time taken to travel upstream:

Total duration = Time downstream + Break time + Time upstream

Since the duration of the break is given as 3 hours, we can substitute this value into the equation:

Total duration = Time downstream + 3 hours + Time upstream

Now, let's calculate the total duration of the trip using the given values.

Calculation:

Time downstream = 36 km / (Speed of the boat + 3 km/h)

Time upstream = 36 km / (Speed of the boat - 3 km/h)

Total duration = Time downstream + 3 hours + Time upstream

Please note that we need the value of the boat's speed to calculate the total duration of the trip. Unfortunately, the boat's speed is not provided in the question. Could you please provide the speed of the boat?