Question

ЛОДКА ПЛЫВЕТ ПО ТЕЧЕНИЮ РЕКИ СО СКОРОСТЬЮ 6 ЦЕЛЫХ 4/5 КМ/Ч,СКОРОСТЬ ТЕЧЕНИЯ РЕКИ РОВНА 2 ЦЕЛЫХ 1/4 КМ/Ч,НАЙДИТЕ СКОРОСТЬ ЛОДКИ ПРОТИВ ТЕЧЕНИЯ, ЗА РАНЕЕ СПАСИБа

Answer 1

Скорость по течению: 6 4/5 км/ч Скорость лодки: 2 1/4 км/ч Скорости против течения: ?? ------------- 1) 6 4/5: 2 1/4= 15,3(км/ч)

Answer 2

6,8км/ч - по течению.
6,8 - 2,25 - в стоячей воде.
6,8 - 2,25 - 2,25 - против течения. 6,8-4,5=2,3 км/ч.

Answer 3

Calculating the Boat's Speed

To find the speed of the boat against the current, we can use the formula: Speed of boat against the current = Speed of boat in still water - Speed of current

Given: - Speed of the boat in the current = 6 4/5 km/h - Speed of the current = 2 1/4 km/h

Using the formula, we can calculate the speed of the boat against the current.

Speed of boat against the current = 6 4/5 km/h - 2 1/4 km/h

Calculation

``` 6 4/5 km/h = 34/5 km/h 2 1/4 km/h = 9/4 km/h

Speed of boat against the current = 34/5 km/h - 9/4 km/h = (34/5 km/h) - (9/4 km/h) = (136/20 km/h) - (45/20 km/h) = (136 - 45)/20 km/h = 91/20 km/h = 4 11/20 km/h ``` The speed of the boat against the current is 4 11/20 km/h.