Question

Помогите решить задачу!Оля и Оксана живут в разных посёлках, расстояние между которыми 1 км 200 м. Оля обычно проходит это расстояние за час,а Оксана за 40 минут.Сегодня в 9 часов они вышли из своих посёлков навстречу друг другу.Смогут ли они встретиться до 9 часов 20 минут,если будут идти со своей обычной скоростью?Помогите пожалуйста,завтра здавать работу!

Answer 1

1)1200:60=20м\мин-скорость Оли.
2)1200:40=30м\мин-скорость Оксаны.
3)20+30=50м\мин-скорость сближения.
4)1200:50=через 24мин-встретятся.
5)9ч+24мин=9ч 24мин-не смогут встретится до 9ч 20мин.

Answer 2

Problem Analysis

To solve this problem, we need to determine if Olga and Oksana will be able to meet before 9:20 AM if they walk at their usual speeds.

We are given the following information: - Olga usually covers the distance of 1 kilometer and 200 meters in 1 hour. - Oksana usually covers the same distance in 40 minutes.

We need to calculate the time it takes for Olga and Oksana to meet and compare it to the given time of 9:20 AM.

Solution

To find the time it takes for Olga and Oksana to meet, we can calculate the time it takes for each of them to cover the distance from their respective villages to the meeting point.

Let's calculate the time it takes for Olga to reach the meeting point: - Olga covers the distance of 1 kilometer and 200 meters in 1 hour. - We can convert 1 hour to minutes by multiplying it by 60: 1 hour * 60 minutes = 60 minutes. - Therefore, Olga covers the distance in 60 minutes.

Now, let's calculate the time it takes for Oksana to reach the meeting point: - Oksana covers the same distance in 40 minutes.

To find the total time it takes for Olga and Oksana to meet, we can add their individual times: - Olga takes 60 minutes. - Oksana takes 40 minutes. - Total time = 60 minutes + 40 minutes = 100 minutes.

Since the total time it takes for Olga and Oksana to meet is 100 minutes, we need to convert this to hours and minutes to compare it to the given time of 9:20 AM.

To convert 100 minutes to hours and minutes: - Divide 100 minutes by 60 to get the number of hours: 100 minutes / 60 = 1 hour and 40 minutes.

Therefore, Olga and Oksana will meet 1 hour and 40 minutes after they start walking.

Now, let's compare this to the given time of 9:20 AM: - 9:20 AM is 9 hours and 20 minutes. - If Olga and Oksana start walking at 9:00 AM, they will meet at 10:40 AM, which is after 9:20 AM.

Based on the calculations, Olga and Oksana will not be able to meet before 9:20 AM if they walk at their usual speeds.

Conclusion

Olga and Oksana will not be able to meet before 9:20 AM if they walk at their usual speeds. They will meet 1 hour and 40 minutes after they start walking, which is after 9:20 AM.