Question

Собственная скорость лодки 7,85 километров в час скорость течения 2,6 километров час За какое время Лодка проплывает по течению реки расстояние 12,54 километров

Answer 1

1)7,85+2,6=10,45км/час скорость лодки по течению;
2)12,54:10,45=1,2часа.
Ответ:за 1час 12минут.

Answer 2

Calculation of Time Taken for the Boat to Travel with the Current

To calculate the time taken for the boat to travel a distance of 12.54 kilometers with a current of 2.6 kilometers per hour, we need to consider the boat's own speed and the speed of the current.

Given: - Boat's speed: 7.85 kilometers per hour - Current's speed: 2.6 kilometers per hour - Distance to be traveled: 12.54 kilometers

To find the time taken, we can use the formula:

Time = Distance / Speed

Let's substitute the values into the formula:

Time = 12.54 kilometers / (7.85 kilometers per hour + 2.6 kilometers per hour)

Simplifying the equation:

Time = 12.54 kilometers / 10.45 kilometers per hour

Calculating the result:

Time = 1.2 hours

Therefore, it will take approximately 1.2 hours for the boat to travel a distance of 12.54 kilometers with the current.

Please note that the above calculation assumes a constant speed throughout the journey and does not account for factors such as changes in current speed or any other external factors that may affect the boat's speed.