Question

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

Answer 1

6,7-1,2=5,5(км/ч) против теч
6,7+1,2=7,9(км/ч) по теч
7,9*2=15,8(км) 
5,5*2=11(км)
15,8+11=26,8(км)
ответ: 26,8км
вроде так сорри краткую запись неумею

Answer 2

Calculation of the Distance Traveled by the Motorboat

To calculate the distance traveled by the motorboat, we need to consider the speed of the boat and the speed of the river current.

Given: - Speed of the motorboat: 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 find the distance traveled, we can use the formula: distance = speed × time.

Let's calculate the distance traveled against the current first: - Speed of the boat relative to the current = boat speed - current speed = 6.7 km/h - 1.2 km/h = 5.5 km/h. - Distance traveled against the current = speed × time = 5.5 km/h × 2 hours = 11 km.

Now, let's calculate the distance traveled with the current: - Speed of the boat relative to the current = boat speed + current speed = 6.7 km/h + 1.2 km/h = 7.9 km/h. - Distance traveled with the current = speed × time = 7.9 km/h × 2 hours = 15.8 km.

Therefore, the motorboat traveled a total distance of 11 km against the current and 15.8 km with the current during the 4-hour journey.

Summary:

- Distance traveled against the current: 11 km - Distance traveled with the current: 15.8 km

Please note that the calculations provided above are based on the given information and assumptions.