Question

Собственная скорость лодки больше скорости течения в 5 раз. Лодка по течению реки проплывает 36 км за 3 часа .Какое расстояние проплывает лодка против течения за 2 часа?

Answer 1

1)36:3=12(км)-в час
2)12x5=60(км)
Ответ:60 км

Answer 2

Given Information

The boat's own speed is 5 times greater than the speed of the current. When traveling downstream, the boat covers a distance of 36 km in 3 hours.

Calculating Boat's Speed and Current's Speed

To calculate the boat's speed and the speed of the current, we can use the formula: \[ \text{Boat's speed} = \frac{\text{Distance}}{\text{Time}} \] \[ \text{Current's speed} = \frac{\text{Boat's speed}}{5} \]

Using the given information: - Boat's speed downstream = \(\frac{36 \text{ km}}{3 \text{ hours}} = 12 \text{ km/h}\) - Current's speed = \(\frac{12 \text{ km/h}}{5} = 2.4 \text{ km/h}\)

Calculating Boat's Distance Upstream

To calculate the distance the boat travels upstream in 2 hours, we can use the formula: \[ \text{Distance} = \text{Speed} \times \text{Time} \]

Using the calculated current's speed: - Distance upstream = \(2 \text{ hours} \times (12 \text{ km/h} - 2.4 \text{ km/h}) = 19.2 \text{ km}\)

So, the boat travels 19.2 km upstream in 2 hours.