Question

Расстояние от пристани А до пристани Б катер проплыл по течению реки за 6 часов а от пристани б до пристани А за 7,5 часов скорость течения реки 2км ч Найдите собственную скорость катера

Answer 1

Ответ:18 км/ч

Пошаговое объяснение:

x- скорость катера

x+2 - скорость катера по течению

x-2 - скорость катера против течения

Составим уравнение

6(x+2)=7,5(x-2)

6x-7,5x=-15-12

1,5x=27

x=18км/ч

Answer 2

Ответ:

Пошаговое объяснение:

х - скорость катера

6(х + 2) = 7,5(х - 2)

6х + 12 = 7,5х - 15

6х - 7,5х = - 15 - 12

-1,5х = -27

х = (-27)/(-1,5)

х = 18 км/ч

Ответ: скорость катера 18 км/ч

Answer 3

Calculation of the Boat's Speed

To find the boat's speed, we need to consider the time it took for the boat to travel from port A to port B and from port B to port A, as well as the speed of the river's current.

Given the information provided: - The boat traveled from port A to port B in 6 hours. - The boat traveled from port B to port A in 7.5 hours. - The speed of the river's current is 2 km/h.

To calculate the boat's speed, we can use the formula:

Boat's Speed = Distance / Time

Let's calculate the boat's speed for each leg of the journey.

1. From port A to port B: - Time taken = 6 hours - Distance = Boat's speed × Time taken - Let's assume the boat's speed is represented by x. - Distance = x × 6 km

2. From port B to port A: - Time taken = 7.5 hours - Distance = Boat's speed × Time taken - Distance = x × 7.5 km

Since the distance traveled in both directions is the same, we can equate the two distances:

x × 6 = x × 7.5

Simplifying the equation:

6x = 7.5x

Dividing both sides by x:

6 = 7.5

This equation is not possible, as 6 cannot be equal to 7.5. Therefore, there seems to be an error in the given information or calculation.

Please double-check the information provided and ensure that all the values are accurate.