Question

Собственная скорость катера 15,3 км/ч а скорость течения реки 2,4 км/ч за 2 часа Катар по течению реки приобрел 30% расстояния между пристанями a и b какое растянется между пристанями a и b

Answer 1

1) 15,3+2,4=17,7* 2=35,4
2) 35,4*100:30=118 
Ответ:118 расстояние между a и b 

Answer 2

(15,3+2,4)*2=35,4
35,4:30=1,18
1,18*100=118км

Answer 3

Calculation of the Distance between Ports A and B

To calculate the distance between ports A and B, we need to consider the speed of the boat and the speed of the river current.

Given: - Boat speed: 15.3 km/h - River current speed: 2.4 km/h - Time: 2 hours

We can calculate the distance traveled by the boat in still water by multiplying the boat speed by the time: Distance in still water = Boat speed * Time = 15.3 km/h * 2 hours = 30.6 km

Next, we need to calculate the distance traveled by the boat with the river current. Since the boat is traveling with the current, its effective speed will be the sum of the boat speed and the river current speed: Effective speed = Boat speed + River current speed = 15.3 km/h + 2.4 km/h = 17.7 km/h

To find the distance traveled with the river current, we can multiply the effective speed by the time: Distance with river current = Effective speed * Time = 17.7 km/h * 2 hours = 35.4 km

The boat has traveled 30% of the distance between ports A and B. Let's denote the total distance between ports A and B as D. Therefore, the distance traveled by the boat with the river current is 30% of D: Distance with river current = 0.3 * D

Now we can set up an equation to solve for the total distance between ports A and B: 0.3 * D = 35.4 km

To find D, we can divide both sides of the equation by 0.3: D = 35.4 km / 0.3 = 118 km

Therefore, the total distance between ports A and B is 118 kilometers.

Please note that the above calculation assumes a constant speed of the boat and the river current over the entire duration of the journey. In reality, these speeds may vary, and other factors such as wind and tides can also affect the distance traveled.