Question

(b) 100 h - 78 h 57 min 59 s​

Answer 1

100 hr - 78 + 57/60 + 59/3600 hr

100 hr - 78.96 hr

21.04 hr

Answer 2

22h 3min 1s

Step-by-step explanation:

100-78

=22h

60-57

=3min

60-59

=1s