Question

42. На железнодорожной ветке 5 станций. Первый перегон поезд проходит за 21 мин. Второй перегон поезд проходит быстрее, чем первый, на 8 мин, но медленнее, чем третий перегон, на 14 мин. На прохождение четвертого перегона поезд тратит на 4 мин меньше, чем на третий. Сколько времени поезд тратит на весь путь?

Answer 1

Ответ:

1 вагон - за 21 минута

2 вагон - за 21+8= 29 минут

3 вагон - за 29+14=43 минут

4 вагон - за 43-4=39минут

Пошаговое объяснение:

1 вагон - за 21 минуту

2 вагон - на 8 минут >, чем первый и на 14 минут <, чем 3

3 вагон - ?

4 вагон - на 4 минут <, чем 3

Answer 2

Пошаговое объяснение: 21+13+(-1)+(-5)=28

Answer 3

Calculation of Total Time for the Train Journey

To calculate the total time for the train journey, we need to consider the time taken for each leg of the journey and add them together.

Let's break down the information given:

- There are 5 stations on the railway line. - The first leg of the journey takes 21 minutes. - The second leg is faster than the first leg by 8 minutes. - The third leg is slower than the second leg by 14 minutes. - The fourth leg takes 4 minutes less than the third leg.

To calculate the total time, we'll add up the times for each leg of the journey.

1. First leg: 21 minutes. 2. Second leg: The second leg is faster than the first leg by 8 minutes. So, the second leg takes 21 - 8 = 13 minutes. 3. Third leg: The third leg is slower than the second leg by 14 minutes. So, the third leg takes 13 + 14 = 27 minutes. 4. Fourth leg: The fourth leg takes 4 minutes less than the third leg. So, the fourth leg takes 27 - 4 = 23 minutes. 5. Fifth leg: The fifth leg is not mentioned in the question, so we'll assume it takes the same time as the fourth leg, which is 23 minutes.

Now, let's add up the times for each leg to find the total time for the train journey:

21 + 13 + 27 + 23 + 23 = 107 minutes.

Therefore, the train takes 107 minutes for the entire journey.

Please let me know if there's anything else I can help you with!