Subtract 5hours 30mins 40secs from 9hrs 20mins 10secs

13770 seconds

OR

229 minutes and 30 seconds

OR

3 hours 49 minutes and 30 seconds

Step-by-step explanation:

Question: Subtract 5hours 30mins 40secs from 9hrs 20mins 10secs

1. Convert everything in to seconds so both times have a common unit.

9hrs 20mins 10secs = 33,610 seconds

5hours 30mins 40secs = 19,840 seconds

2. Subtract

33,610 - 19,840 = 13770

3. Convert back to hours, minutes, and seconds

13770 seconds = 3 hours 49 minutes and 30 seconds