Question

В 9 ч расстояние между катерами,плывущими навстречу друг другу,было 240 км.Первый катер двигался со скоростью 25 км/ч,второй-35 км/ч.Встретятся ли они до полудня того же дня.Пожалуйста,по действиям

Answer 1

1) 12 - 9 = 3 часа осталось до полудня
2) 25 + 35 = 60 км/ч скорость сближения катеров
3) 60 * 3 = 180 км проедут до полудня катера 
Не встретятся т.к. до полудня успеют пройти только 180 м 
240 - 180 = 60 м останется еще проехать до встречи, т.е. 1 час еще, встретятся 12 + 1 = 13 ч

Answer 2

Problem Analysis

We are given the following information: - The distance between two boats traveling towards each other is 240 km. - The first boat is moving at a speed of 25 km/h. - The second boat is moving at a speed of 35 km/h.

We need to determine if the two boats will meet before noon on the same day.

Solution

To solve this problem, we can use the formula:

Time = Distance / Speed

Let's calculate the time it will take for each boat to cover the distance between them.

The time taken by the first boat is: Time taken by the first boat = Distance / Speed = 240 km / 25 km/h

The time taken by the second boat is: Time taken by the second boat = Distance / Speed = 240 km / 35 km/h

Now, let's calculate the time taken by each boat.

Calculation

The time taken by the first boat is: Time taken by the first boat = 240 km / 25 km/h = 9.6 hours

The time taken by the second boat is: Time taken by the second boat = 240 km / 35 km/h = 6.857 hours

Conclusion

Based on the calculations, the first boat will take approximately 9.6 hours to cover the distance, while the second boat will take approximately 6.857 hours. Since both boats started at the same time, they will meet before noon on the same day.

Please note that the above calculations assume that the boats are traveling at a constant speed and there are no other factors affecting their speed or direction.

Let me know if you need any further assistance!