Question

V катера против течения реки=14 1/5 км/ч, а V течение реки=1 4/5 км/ч. Какое S пройдёт катер, если будет плыть 2 часа по течению

Answer 1

14 1\5+1 4\5=16 км\час-собственная скорость катера
16+1 4\5 = 17 4\5 км\час - скорость по течению
17 4\5*2= 35 3\5 км -пройдёт катер за 2 часа по течению

Answer 2

Problem Analysis

To solve this problem, we can use the formula: S = (V + u) * t, where: - S is the distance traveled, - V is the speed of the boat in still water, - u is the speed of the current, and - t is the time traveled.

Given: - V (speed of the boat against the current) = 14 1/5 km/h - u (speed of the current) = 1 4/5 km/h - t (time traveled with the current) = 2 hours

We need to find the distance the boat will travel when moving with the current for 2 hours.

Calculation

Using the formula S = (V + u) * t, we can calculate the distance traveled by the boat when moving with the current for 2 hours.

Substitute the given values: S = (14 1/5 + 1 4/5) * 2

Solution

Let's calculate the distance traveled by the boat when moving with the current for 2 hours.

S = (14 1/5 + 1 4/5) * 2 S = (14.2 + 1.8) * 2 S = 16 * 2 S = 32 km

Answer

The boat will travel a distance of 32 km when moving with the current for 2 hours.