Question

Собственная скорость лодки 8км ч, скорость течения реки 3 км ч. Какое расстояние проплывет лодка, если будет двигаться по течению 5ч, а затем 3ч против течения реки? СРОЧНО​

Answer 1

Ответ:55 км по течению

15 км против течения

Пошаговое объяснение:8+3=11 км ч

11*5=55 км

8-3=5 км ч

5*3=15 км

Answer 2

Calculation of Distance Traveled by the Boat

To calculate the distance traveled by the boat, we need to consider the boat's speed and the speed of the river current.

Given: - Boat's speed: 8 km/h - River current speed: 3 km/h

The boat will first move with the current for 5 hours and then against the current for 3 hours.

To calculate the distance traveled with the current, we can use the formula:

Distance = Speed × Time

For the boat moving with the current: - Speed = Boat's speed + River current speed = 8 km/h + 3 km/h = 11 km/h - Time = 5 hours

Using the formula, we can calculate the distance traveled with the current:

Distance with the current = Speed × Time = 11 km/h × 5 hours = 55 km.

Next, to calculate the distance traveled against the current, we use the same formula:

For the boat moving against the current: - Speed = Boat's speed - River current speed = 8 km/h - 3 km/h = 5 km/h - Time = 3 hours

Using the formula, we can calculate the distance traveled against the current:

Distance against the current = Speed × Time = 5 km/h × 3 hours = 15 km.

Total Distance Traveled by the Boat

To find the total distance traveled by the boat, we add the distance traveled with the current and the distance traveled against the current:

Total distance = Distance with the current + Distance against the current = 55 km + 15 km = 70 km.

Therefore, the boat will travel a total distance of 70 kilometers if it moves with the current for 5 hours and then against the current for 3 hours.

Please note that the provided answer is based on the given information and calculations.