Question

9 hr. 8 min.
6 hr. 42 min.
+8 hr. 39 min.

Answer 1

39 + 42 + 8 = 89
So 1 hour 29 minutes,
Then you would do
9 + 6 + 8 = 23 hours
Plus the leftover 29 minutes,
23 hours 29 minutes

Answer 2

what’s is your question? so i can help with the answer