Question

Собственная скорость катера 27 1/3 км/ч а, скорость течения реки 1 5/9 км/ч найдите скорость катера по течению реки и против течения реки. Пожалуйста помогите. Если что по течению Я нашла нашла а против нет

Answer 1

Ответ:

Против течения:

27 1/3 -1 5/9= 82/3 -14/9

Умножаем 82/3 на 3,будет:

246/9 -14/9= 202/9= 22 4/9 км/ч

Answer 2

Calculation of Boat Speed with and against River Current

To find the speed of the boat with and against the river current, we need to consider the boat's own speed and the speed of the river current.

Given information: - Boat's own speed: 27 1/3 km/h - River current speed: 1 5/9 km/h

To find the boat's speed with the river current, we add the boat's own speed and the river current speed: - Boat's speed with the river current = Boat's own speed + River current speed

To find the boat's speed against the river current, we subtract the river current speed from the boat's own speed: - Boat's speed against the river current = Boat's own speed - River current speed

Let's calculate the boat's speed with and against the river current:

Boat's speed with the river current: - Boat's own speed = 27 1/3 km/h - River current speed = 1 5/9 km/h

Boat's speed with the river current = 27 1/3 km/h + 1 5/9 km/h

To add the fractions, we need to find a common denominator. The common denominator for 3 and 9 is 9.

Converting 1/3 to a fraction with a denominator of 9: 1/3 = (1/3) * (3/3) = 3/9

Converting 5/9 to a fraction with a denominator of 9: 5/9 = (5/9) * (1/1) = 5/9

Now we can add the fractions: 27 1/3 km/h + 1 5/9 km/h = 27 km/h + 3/9 km/h + 1 km/h + 5/9 km/h = 28 km/h + 8/9 km/h

Therefore, the boat's speed with the river current is 28 8/9 km/h.

Boat's speed against the river current: - Boat's own speed = 27 1/3 km/h - River current speed = 1 5/9 km/h

Boat's speed against the river current = 27 1/3 km/h - 1 5/9 km/h

To subtract the fractions, we need to find a common denominator. The common denominator for 3 and 9 is 9.

Converting 1/3 to a fraction with a denominator of 9: 1/3 = (1/3) * (3/3) = 3/9

Converting 5/9 to a fraction with a denominator of 9: 5/9 = (5/9) * (1/1) = 5/9

Now we can subtract the fractions: 27 1/3 km/h - 1 5/9 km/h = 27 km/h + 3/9 km/h - 1 km/h - 5/9 km/h = 26 km/h + 8/9 km/h

Therefore, the boat's speed against the river current is 26 8/9 km/h.

So, the boat's speed with the river current is 28 8/9 km/h, and the boat's speed against the river current is 26 8/9 km/h.

Please let me know if there's anything else I can help you with!