Question

Скорость катера по течению реки 22 км ч.А против течения 18 км ч.Найдите скорость течнеия и собствееную скорость катера

Answer 1

Х-скорость течения
у-скорость катера
х+у=22
у-х=18
у=22-х
22-х-х=18
22-2х=18
2х=22-18
2х=4
х=2км/ч скорость течения
18+2=20км/ч скорость катера

Answer 2

Собственная Скорость катера 4 км ч  

Answer 3

Calculating River Current Speed and Boat's Speed

To find the speed of the river current and the boat's own speed, we can use the following formulas:

1. Boat's Speed in Still Water (B) = (Speed Downstream + Speed Upstream) / 2 2. Speed of the River Current (C) = (Speed Downstream - Speed Upstream) / 2

Given: - Speed downstream (with the current) = 22 km/h - Speed upstream (against the current) = 18 km/h

Calculating Boat's Speed in Still Water (B)

Using the formula: Boat's Speed in Still Water (B) = (Speed Downstream + Speed Upstream) / 2 Boat's Speed in Still Water (B) = (22 + 18) / 2 Boat's Speed in Still Water (B) = 40 / 2 Boat's Speed in Still Water (B) = 20 km/h

Calculating Speed of the River Current (C)

Using the formula: Speed of the River Current (C) = (Speed Downstream - Speed Upstream) / 2 Speed of the River Current (C) = (22 - 18) / 2 Speed of the River Current (C) = 4 / 2 Speed of the River Current (C) = 2 km/h

Conclusion

The speed of the river current is 2 km/h, and the boat's speed in still water is 20 km/h.