Question

Катер прошёл по озеру расстояние 112км за8ч без остановок,а по реке против течения,скорость которого 3км/ч,прошёл 88км,сделав при этом одну остановку. На весь путь катер затратил 19ч. Сколько времени длилась остановка?

Answer 1

1)112км:8ч=14 км/ч - скорость катера на озере 
2)14км/ч-3км/ч=11 км/ч - скорость катера на реке
3)88км:11км/ч=8 ч - время катера на реке.
4)19ч-(8ч+8ч)=3ч - длилась остановка
Ответ:3 ч длилась остановка
 

Answer 2

Calculation of the Stoppage Time

To calculate the duration of the stoppage, we can use the given information about the total distance traveled, the time taken, and the speed of the river's current.

Let's break down the information provided:

- Distance traveled on the lake: 112 km - Time taken on the lake: 8 hours - Distance traveled on the river: 88 km - Time taken on the river: Unknown (we'll calculate this) - Speed of the river's current: 3 km/h - Total time taken for the entire journey: 19 hours

To find the duration of the stoppage, we need to calculate the time taken on the river. We can use the formula:

Time = Distance / Speed

Let's calculate the time taken on the river:

Time taken on the river = Distance traveled on the river / Speed of the river's current

Time taken on the river = 88 km / 3 km/h

Time taken on the river = 29.33 hours

Now, we can calculate the duration of the stoppage:

Duration of the stoppage = Total time taken for the entire journey - (Time taken on the lake + Time taken on the river)

Duration of the stoppage = 19 hours - (8 hours + 29.33 hours)

Duration of the stoppage = -18.33 hours

The negative value indicates that there was no stoppage during the journey. It seems there might be an error in the given information or calculation. Please double-check the provided data to ensure accuracy.

Please note that the calculation assumes a constant speed throughout the journey and does not account for any other factors that may affect the travel time.