Question

Лодка ехала по течению, за 2 часа она проехала 30,4 км, назови скорость в стоячей воде, если скорость течения 1,2 км в час

Answer 1

30,4:2=15,2 км\ч скорость лодки по течению
когда находим скорость лодки по течению,мы к скорости лодки в стоячей воде(V)   прибавляем скорость течения   V+1,2=15,2    V=15,2-1,2     V=14км\ч

Answer 2

Calculation of Speed in Still Water

To calculate the speed of the boat in still water, we can use the formula:

Speed in still water = Speed of the boat downstream - Speed of the current

Given that the boat traveled 30.4 km downstream in 2 hours and the speed of the current is 1.2 km/h, we can calculate the speed of the boat in still water as follows:

Speed of the boat downstream = Distance / Time = 30.4 km / 2 hours = 15.2 km/h

Speed in still water = 15.2 km/h - 1.2 km/h = 14 km/h

Therefore, the speed of the boat in still water is 14 km/h.