Question

Требуется подсчитать, на сколько минут раньше будет заканчиваться k-й урок, если все перемены сократить на 5 минут.

Answer 1

1 урок на 5 раньше
2 урок на 10 минут раньше
3 урок на 15 минут раньше
4 урок на 20 минут раньше
5 урок на 25 минут раньше

Answer 2

Calculating the End Time of the k-th Lesson with Reduced Break Time

To calculate the end time of the k-th lesson when all breaks are reduced by 5 minutes, we can follow these steps:

1. Determine the Original End Time of the k-th Lesson: - The original end time of the k-th lesson is given as 45 minutes multiplied by k, denoted as 45k.

2. Reduce Break Time: - All breaks are to be reduced by 5 minutes.

3. Calculate the New End Time of the k-th Lesson: - The new end time of the k-th lesson can be calculated by subtracting 5 minutes from the original end time for each break.

4. Final Calculation: - After reducing the break time, the new end time of the k-th lesson can be determined.

Let's proceed with the calculation:

Calculation

The original end time of the k-th lesson is given as 45 minutes multiplied by k, denoted as 45k After reducing all breaks by 5 minutes, the new end time of the k-th lesson can be calculated by subtracting 5 minutes from the original end time for each break.

Therefore, the new end time of the k-th lesson, after reducing all breaks by 5 minutes, can be expressed as: 45k - 5

This calculation provides the new end time for the k-th lesson when all breaks are reduced by 5 minutes.

If you have any further questions or need additional assistance, feel free to ask!