Question

Теплоход шёл 4 часа по течению и 3 часа против течения реки. Его собственная скорость 32,4 км/ч, а скорость по течению 34,2 км/ч. Найдите расстояние которое прошёл теплоход за кто время в км.

Answer 1

34,2 км /час - 32,4 км/час = 1,8 км/час (скорость течения)
34,2 км/час * 4 часа = 136,8 км (прошел по течению)
32,4 км/час - 1,8 км/час = 30,6 км/час (скорость против течения)
30,6 км/час * 3 часа = 91,8 км (прошел против течения)
136,8 км + 91,8 км = 228,6 км
Ответ: теплоход прошел всего 228,6 км

Answer 2

Problem Analysis

We are given the following information: - The boat traveled for 4 hours with the current at a speed of 32.4 km/h. - The boat traveled for 3 hours against the current at a speed of 34.2 km/h.

We need to find the distance traveled by the boat in kilometers.

Solution

To find the distance traveled by the boat, we can use the formula:

Distance = Speed × Time

Let's calculate the distance traveled with the current and against the current separately and then find the total distance.

1. Distance traveled with the current: - Speed = 32.4 km/h - Time = 4 hours - Distance = Speed × Time

2. Distance traveled against the current: - Speed = 34.2 km/h - Time = 3 hours - Distance = Speed × Time

3. Total distance traveled: - Total distance = Distance with the current + Distance against the current

Let's calculate the distances.

Calculation

1. Distance traveled with the current: - Speed = 32.4 km/h - Time = 4 hours - Distance = 32.4 km/h × 4 hours = 129.6 km

2. Distance traveled against the current: - Speed = 34.2 km/h - Time = 3 hours - Distance = 34.2 km/h × 3 hours = 102.6 km

3. Total distance traveled: - Total distance = 129.6 km + 102.6 km = 232.2 km

Answer

The boat traveled a distance of 232.2 km in the given time.