Question

занятия в школе закончились в 13 ч 10 мин в котором часу они начались если они продолжались 4 ч 25 мин

Answer 1

13ч 10 мин = 13*60 + 10 = 790 мин.

4ч 25 мин = 4*60 + 25 = 265 мин.

790 - 265 = 525 мин.

525 / 60 = 8,75ч или 8ч и 0,75*60 = 45 мин.

Ответ: 8ч 45мин

Answer 2

Відповідь:

8ч 45 мин

Покрокове пояснення:

1) 13ч 10мин -4ч 25мин=12ч 70мин-4ч 25 мин=8ч 45 мин.

Answer 3

Calculation of School Start Time

To determine the start time of school if it ended at 13:10 and lasted for 4 hours and 25 minutes, we can subtract the duration from the end time.

The calculation is as follows:

End time: 13:10 Duration: 4 hours and 25 minutes

To subtract the duration, we start by converting the duration to minutes:

4 hours = 4 * 60 = 240 minutes 25 minutes = 25 minutes

Total duration in minutes = 240 + 25 = 265 minutes

Now, we subtract the duration from the end time:

13:10 - 265 minutes

To perform the subtraction, we need to convert the end time to minutes as well:

13 hours = 13 * 60 = 780 minutes 10 minutes = 10 minutes

Total end time in minutes = 780 + 10 = 790 minutes

Now, we subtract the duration from the end time:

790 minutes - 265 minutes = 525 minutes

To convert the result back to hours and minutes, we divide by 60:

525 minutes / 60 = 8 hours and 45 minutes

Therefore, if the school ended at 13:10 and lasted for 4 hours and 25 minutes, it started at 8:45.

Conclusion

Based on the calculation, if the school ended at 13:10 and lasted for 4 hours and 25 minutes, it started at 8:45.