Question

Собственная скорость моторной лодки 6,7км/ч. Скорость течения реки 1,2км/ч.Лодка шла 2 часа против течения и 2 часа по течению. Какой путь прошла лодка за эти 4 часа?

Answer 1

6,7-1,2=5,5 км против течения скорость
6,7+1,2=7,9 км по течению
5,5*2=11 км
7,9*2=15,8 км
15,8+11=26,8

Answer 2

(6,7+1,2)*2=15,8км по течению

(6,7-1,2)*2=11км против течения

15,8+11=26,8км прошла моторная лодка за 4 часа

Ответ : 26,8 км

Answer 3

Calculation of the Boat's Distance Traveled

To calculate the distance traveled by the boat in 4 hours, we need to consider the boat's speed and the direction of the current.

Given: - Boat's own speed: 6.7 km/h - Speed of the river current: 1.2 km/h - Time spent traveling against the current: 2 hours - Time spent traveling with the current: 2 hours

To calculate the distance traveled against the current, we can subtract the speed of the current from the boat's own speed: 6.7 km/h - 1.2 km/h = 5.5 km/h

To calculate the distance traveled with the current, we can add the speed of the current to the boat's own speed: 6.7 km/h + 1.2 km/h = 7.9 km/h

Now, we can calculate the distance traveled in each direction by multiplying the respective speeds by the time spent: Distance traveled against the current: 5.5 km/h * 2 hours = 11 km Distance traveled with the current: 7.9 km/h * 2 hours = 15.8 km

Finally, to find the total distance traveled by the boat in 4 hours, we can add the distances traveled in each direction: Total distance traveled = Distance against the current + Distance with the current Total distance traveled = 11 km + 15.8 km = 26.8 km

Therefore, the boat traveled a total distance of 26.8 km in the 4 hours, spending 2 hours against the current and 2 hours with the current.