Question

40сек+13мин40сек=28мин80сек

Answer 1

14 мин + 20 сек = 29 мин 20 сек

Answer 2

To add 40 seconds to 13 minutes and 40 seconds, you can break it down as follows:

1. Add the seconds: 40 seconds + 40 seconds = 80 seconds.
2. Convert 80 seconds into minutes: 80 seconds ÷ 60 seconds/minute = 1 minute and 20 seconds.
3. Add the minutes: 13 minutes + 1 minute = 14 minutes.
4. Add the remaining 20 seconds.

So, 13 minutes and 40 seconds + 40 seconds is equal to 14 minutes and 20 seconds.