Question

17ч. 30 мин.+2ч. 40 мин.

Answer 1

Ответ: 20 ч. 10 мин.

Answer 2

17ч + 2ч = 19ч
30мин + 40мин = 1ч 10мин
19ч + 1ч 10мин = 20ч 10 мин

Answer 3

17 hours and 30 minutes plus 2 hours and 40 minutes equals 20 hours and 10 minutes.

So, 17 hours and 30 minutes + 2 hours and 40 minutes = 20 hours and 10 minutes.