Question

21ч15мин +6ч 49мин-1сут

Answer 1

Ответ:

4 ч 4 мин.

Пошаговое объяснение:

Перевод:

21 ч 15 мин = 1 275 мин

6 ч 49 мин = 409 мин

1 сут = 1 440 мин

Решение:

1 275 мин + 409 мин - 1 440 мин

 1) 1 275 + 409 = 1 684 мин

 2) 1 684 - 1 440 = 244 мин

Перевод:

244 мин = 4 ч 4 мин

Answer 2

To perform the calculations, let's first convert all the times into a common unit (minutes) and then add/subtract them.

1 hour = 60 minutes 1 day = 24 hours = 24 * 60 minutes = 1440 minutes

Now, let's perform the calculations step-by-step:

1. 21 hours and 15 minutes = 21 * 60 + 15 = 1275 minutes
2. 6 hours and 49 minutes = 6 * 60 + 49 = 409 minutes
3. 1 day = 1 * 1440 = 1440 minutes

Now, we can perform the operations:

21ч 15мин + 6ч 49мин - 1 сут

= 1275 minutes + 409 minutes - 1440 minutes

= 1275 + 409 - 1440

= 244 minutes

So, the result is 244 minutes. We can convert this back into hours and minutes:

244 minutes ÷ 60 minutes/hour = 4 hours with a remainder of 4 minutes.

Therefore, the final result is 4 hours and 4 minutes.