Question

Лодка пролывет по озеру расстояние 40км за 5ч а по течению реки за 4ч за сколько часов это же расстояние проплывет плот по реке

Answer 1

Плот проплывет по реке расстояние в 40км за 4 часа

Answer 2

Calculation of the Boat's Speed

To determine the time it takes for a raft to travel the same distance along the river, we need to calculate the speed of the boat when it is traveling across the lake.

Given: - Distance traveled across the lake: 40 km - Time taken to travel across the lake: 5 hours

To calculate the speed of the boat, we can use the formula:

Speed = Distance / Time

Substituting the given values:

Speed = 40 km / 5 hours = 8 km/h

Calculation of the Raft's Time

Now that we know the speed of the boat, we can calculate the time it takes for the raft to travel the same distance along the river.

Given: - Speed of the boat across the lake: 8 km/h - Time taken to travel along the river: 4 hours

To calculate the time taken by the raft, we can use the formula:

Time = Distance / Speed

Substituting the given values:

Time = 40 km / 8 km/h = 5 hours

Therefore, the raft will take 5 hours to travel the same distance along the river.