Answer:
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