Question

Скорость моторной лодки при движении против течения реки равна 12 км/ч, а скорость движения по течению 14 км/ч. Найди скорость лодки в стоячей воде и скорость течения реки

Answer 1

(14+12)÷2=13 км/ч скорость лодки в стоячей воде.
13-12=1 км/ч скорость течения реки.
Ответ: 13 км/ч собственная скорость лодки; 1 км/ч скорость течения реки.

Answer 2

Calculating Boat's Speed in Still Water and River's Speed

To find the speed of the boat in still water and the speed of the river, we can use the following formulas:

1. Speed of Boat in Still Water (B) = (Speed Against the Current + Speed With the Current) / 2 2. Speed of the River (R) = (Speed With the Current - Speed Against the Current) / 2

Using the given values: - Speed against the current = 12 km/h - Speed with the current = 14 km/h

Calculations

1. Speed of Boat in Still Water (B): - B = (12 + 14) / 2 - B = 26 / 2 - B = 13 km/h

2. Speed of the River (R): - R = (14 - 12) / 2 - R = 2 / 2 - R = 1 km/h

Results

- Speed of the boat in still water is 13 km/h. - Speed of the river is 1 km/h.

These calculations show that the speed of the boat in still water is 13 km/h, and the speed of the river is 1 km/h.