Question

Решите пожалуйста, Моторная лодка 2ч плыла по течению реки и 3 Ч против течения реки. Собственная самость моторной лодки 19,5 км/ч, скорость течения реки 2,8 км/ч. Какое расстояние проплыла моторная лодка.

Answer 1

Скорость движения по течению 19,5+2,8=22,3(км/час),
проплыла 22,3*2=44,6(км/час).
Скорость против течения 19,5-2,8=16,7(км/час).
проплыла 16,7*3=50,1(км)
общее расстояние 44,6+50,1=94,7(км)

Answer 2

Calculating the Distance Traveled by the Motorboat

To calculate the distance traveled by the motorboat, we can use the formula:

Distance = Speed × Time

First, let's calculate the distance traveled by the motorboat when it's moving with the current and then against the current.

1. Traveling with the Current: - Speed of the motorboat with the current = (Speed of the motorboat + Speed of the current) - Time taken = 2 hours

Using the formula, the distance traveled by the motorboat with the current can be calculated as: ``` Distance = (Speed of the motorboat + Speed of the current) × Time ```

Substituting the given values: ``` Distance = (19.5 km/h + 2.8 km/h) × 2 h ``` ``` Distance = 22.3 km/h × 2 h ``` ``` Distance = 44.6 km ```

Therefore, the distance traveled by the motorboat with the current is 44.6 kilometers.

2. Traveling against the Current: - Speed of the motorboat against the current = (Speed of the motorboat - Speed of the current) - Time taken = 3 hours

Using the formula, the distance traveled by the motorboat against the current can be calculated as: ``` Distance = (Speed of the motorboat - Speed of the current) × Time ```

Substituting the given values: ``` Distance = (19.5 km/h - 2.8 km/h) × 3 h ``` ``` Distance = 16.7 km/h × 3 h ``` ``` Distance = 50.1 km ```

Therefore, the distance traveled by the motorboat against the current is 50.1 kilometers.

Conclusion

The motorboat traveled 44.6 kilometers with the current and 50.1 kilometers against the current.