Question

Собственная скорость теплохода 22км/ч. Расстояние между причалами 234км. Если теплоход плывет по течению реки, то это расстояние он преодолеет за 9 ч. Найдите скорость течения реки. Найдите время, за которое теплоход преодолеет это расстояние, если будет двигаться против течения реки.

Answer 1

234/9 получаем 26, ээто скорость по течению 26-22=4 - собственная скорость реки 22-4=18 скорость против течения 234/18=13 ч. Вроде так

Answer 2

Calculation of River Current Speed and Time to Travel Distance

To find the speed of the river current and the time it takes for the ship to travel the given distance, we can use the formula:

Speed of the ship in still water = (Distance traveled)/(Time taken)

Let's calculate the speed of the river current and the time it takes for the ship to travel the given distance.

Given: - Speed of the ship in still water = 22 km/h - Distance between the docks = 234 km - Time taken to travel the distance with the current = 9 hours

To find the speed of the river current, we can rearrange the formula as follows:

Speed of the river current = (Distance traveled)/(Time taken) - Speed of the ship in still water

Substituting the given values:

Speed of the river current = 234 km / 9 hours - 22 km/h

Calculating the speed of the river current:

Speed of the river current = 26 km/h

To find the time it takes for the ship to travel the given distance against the current, we can use the same formula:

Time taken = (Distance traveled)/(Speed of the ship in still water - Speed of the river current)

Substituting the given values:

Time taken = 234 km / (22 km/h - 26 km/h)

Calculating the time taken:

Time taken = -234 km / (-4 km/h) = 58.5 hours

Therefore, the speed of the river current is 26 km/h and the time it takes for the ship to travel the given distance against the current is 58.5 hours.

Please note that the negative sign in the time taken indicates that the ship is moving against the current.