Question

Сколько километров пройдёт моторная лодка за 4 часа, двигаясь против течения реки, если её собственная скорость 22км/ч, а скорость течения составляет 5/44 собственной скорости катера?

Answer 1

Составим уравнение скорости лодки относительно берега:
22-(22*5)/44=22-5/2=19,5
и дальше найдем расстояние умножив скорость на время
19,5*4=78
ответ:78км

Answer 2

Calculation of Distance Traveled by the Motorboat

To calculate the distance traveled by the motorboat, we need to consider its own speed and the speed of the river current. Let's break down the information given:

- The motorboat's own speed is 22 km/h. - The speed of the river current is 5/44 times the speed of the motorboat.

To calculate the distance traveled by the motorboat in 4 hours against the current, we need to determine the effective speed of the motorboat. The effective speed is the difference between the motorboat's speed and the speed of the river current.

Let's calculate the effective speed first:

Effective Speed = Motorboat's Speed - Speed of River Current

Given that the speed of the river current is 5/44 times the speed of the motorboat, we can substitute the values into the equation:

Effective Speed = 22 km/h - (5/44) * 22 km/h

Simplifying the equation:

Effective Speed = 22 km/h - (5/44) * 22 km/h = 22 km/h - (5/44) * 22 km/h = 22 km/h - (5/44) * 22 km/h = 22 km/h - 5 km/h = 17 km/h

Now that we have the effective speed of the motorboat, we can calculate the distance traveled by multiplying the effective speed by the time:

Distance Traveled = Effective Speed * Time

Given that the time is 4 hours, we can substitute the values into the equation:

Distance Traveled = 17 km/h * 4 hours = 68 km

Therefore, the motorboat will travel 68 kilometers in 4 hours against the current of the river.

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