Question

Скорость течения реки 2,8 км/ч, а скорость катера по течению 16,7 км/ч. Найдите собственную скорочть катера и его скорость против течения.

Answer 1

Собственная 16,7-2.8=13.9
против течения 13.9-2.8=11.1

Answer 2

Calculating Boat's Speed and Speed Against the Current

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

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

Given: - Speed of the current (C) = 2.8 km/h - Speed of the boat with the current (BC) = 16.7 km/h

Using the above formulas, we can calculate the boat's speed and speed against the current.

Boat's Speed Calculation

Using the formula B = (BC + C) / 2: - B = (16.7 + 2.8) / 2 - B = 19.5 / 2 - B = 9.75 km/h

Speed Against the Current Calculation

Using the formula C = (BC - B): - C = (16.7 - 9.75) - C = 6.95 km/h

So, the boat's speed in still water is 9.75 km/h and its speed against the current is 6.95 km/h.