Question

Скорость катера в стоячей воде равна 12 километров в час скорость течения реки 3 километров час Определите скорость катера по течению реки скорость катера против течения реки путь который пройдёт катер по течению реки за 3 часа путь который пройдет катер против течения реки за 3 часа

Answer 1

1)12-3=9км ч

2)9*3=27км  против течения реки за 3 часа

3)12+3=15км ч по течению реки

4)15*3=45км по течению за 3 часа

Answer 2

Calculation of Boat Speed in Still Water

To determine the speed of the boat in relation to the river current, we need to consider the boat's speed in still water and the speed of the river current.

Given: - Speed of the boat in still water: 12 kilometers per hour - Speed of the river current: 3 kilometers per hour

Boat Speed with the River Current

To calculate the boat's speed with the river current, we add the speed of the boat in still water to the speed of the river current.

Boat speed with the river current = Speed of the boat in still water + Speed of the river current

Substituting the given values: Boat speed with the river current = 12 km/h + 3 km/h = 15 km/h

Therefore, the boat's speed with the river current is 15 kilometers per hour.

Boat Speed against the River Current

To calculate the boat's speed against the river current, we subtract the speed of the river current from the speed of the boat in still water.

Boat speed against the river current = Speed of the boat in still water - Speed of the river current

Substituting the given values: Boat speed against the river current = 12 km/h - 3 km/h = 9 km/h

Therefore, the boat's speed against the river current is 9 kilometers per hour.

Distance Traveled with the River Current

To calculate the distance the boat will travel with the river current in 3 hours, we multiply the boat's speed with the river current by the time.

Distance traveled with the river current = Boat speed with the river current × Time

Substituting the given values: Distance traveled with the river current = 15 km/h × 3 hours = 45 kilometers

Therefore, the boat will travel 45 kilometers with the river current in 3 hours.

Distance Traveled against the River Current

To calculate the distance the boat will travel against the river current in 3 hours, we multiply the boat's speed against the river current by the time.

Distance traveled against the river current = Boat speed against the river current × Time

Substituting the given values: Distance traveled against the river current = 9 km/h × 3 hours = 27 kilometers

Therefore, the boat will travel 27 kilometers against the river current in 3 hours.

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