Question

Скорость катера по течению реки 39км/ч, а против течения 33км/ч. Найдите скорость течения реки и собственную скорость катера.

Answer 1

Пусть x-скорость течения реки.
39-x=33+x
-x-x=33-39
-2x=-6
x=-6:(-2)
x=3(км/ч)-скорость течения реки
1)39-3=36 или 33+3=36(км/ч)-собственная скорость катера.
Ответь:3 км/ч , 36 км/ч.

Answer 2

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. Speed of the boat in still water (B) = (Speed downstream + Speed upstream) / 2 2. Speed of the river current (C) = (Speed downstream - Speed upstream) / 2

Given: - Speed downstream = 39 km/h - Speed upstream = 33 km/h

Using the above formulas: 1. Speed of the boat in still water (B) = (39 + 33) / 2 = 36 km/h 2. Speed of the river current (C) = (39 - 33) / 2 = 3 km/h

Therefore, the speed of the river current is 3 km/h and the boat's own speed is 36 km/h.