Question

КАТЕР ПЛЫЛ ПО РЕКЕ В ТЕЧЕНИИ 4 ЧАСОВ СО СКОРОСТЬЮ 6 КМ\Ч ОБРАТНО ОН ПЛЫЛ 8 Ч.БОЛЬШЕ НАЙДИ СКОРОСТЬ ПРОТИВ ТЕЧЕНИЯ

Answer 1

6*4=24 км -путь
4+8=12ч - время плыл обратно
24:12=2 км/ч скорость против течения

Answer 2

4*6=24 км
24:8=3км/ч скорость против течения

Answer 3

Calculating Speed Against the Current

To find the speed against the current, we can use the formula: Speed against the current = (Speed downstream - Speed upstream) / 2

Given: - Speed downstream = 6 km/h - Time downstream = 4 hours - Time upstream = 8 hours more than downstream

Let's calculate the speed against the current using the given information.

First, we need to find the speed upstream.

Calculating Speed Upstream

Using the formula: Speed = Distance / Time

We can find the distance using the downstream speed and time: Distance = Speed * Time Distance = 6 km/h * 4 h Distance = 24 km

Now, we can find the speed upstream using the distance and time: Speed upstream = Distance / Time Speed upstream = 24 km / (4 h + 8 h) Speed upstream = 24 km / 12 h Speed upstream = 2 km/h

Calculating Speed Against the Current

Now that we have the speed downstream and upstream, we can calculate the speed against the current: Speed against the current = (Speed downstream - Speed upstream) / 2 Speed against the current = (6 km/h - 2 km/h) / 2 Speed against the current = 4 km/h

So, the speed against the current is 4 km/h.