Question

Катер шел 3 часа против течения реки и 2 ч по течению. Какой путь прошел катер за эти 5 ч, если собственная скорость катера 18 км/ч. а скорость течения реки 2 км/ч?

Answer 1

Против течения:
18-2=16км/ч
16*3=48км
По течению:
18+2=20км/ч
20*2=40км
Всего:
40+48=88км.

Answer 2

Приветствую!
1)18-2=16 км/ч - скорость катера против течения.
2)18+2=20 км/ч - скорость катера по течению
16*3=48 км - катер прошел против течения.
20*2=40 км - катер прошел по течению
48+40=88 км- катер прошел в общем за 5 часов

Answer 3

Calculation of the Boat's Distance Traveled

To calculate the distance traveled by the boat, we need to consider the time spent traveling against the current and the time spent traveling with the current.

Given: - Time spent traveling against the current: 3 hours - Time spent traveling with the current: 2 hours - Boat's own speed: 18 km/h - Speed of the river's current: 2 km/h

To calculate the distance traveled against the current, we can use the formula:

Distance = Speed x Time

For the time spent traveling against the current, the boat's effective speed will be the difference between its own speed and the speed of the current. So the effective speed against the current is 18 km/h - 2 km/h = 16 km/h.

Using the formula, the distance traveled against the current is:

Distance against the current = (Effective speed against the current) x (Time against the current)

Distance against the current = 16 km/h x 3 hours = 48 km.

Similarly, to calculate the distance traveled with the current, the boat's effective speed will be the sum of its own speed and the speed of the current. So the effective speed with the current is 18 km/h + 2 km/h = 20 km/h.

Using the formula, the distance traveled with the current is:

Distance with the current = (Effective speed with the current) x (Time with the current)

Distance with the current = 20 km/h x 2 hours = 40 km.

To find the total distance traveled by the boat, we add the distances traveled against the current and with the current:

Total distance = Distance against the current + Distance with the current

Total distance = 48 km + 40 km = 88 km

Therefore, the boat traveled a total distance of 88 kilometers in the 5 hours, spending 3 hours against the current and 2 hours with the current.

Please note that the above calculation assumes a constant speed throughout the journey and does not take into account any other factors that may affect the boat's speed or the flow of the river.