Answer: 2 hours 43 minutes
Step-by-step explanation: To calculate the difference between two times, we convert both time values to seconds since midnight using the following formula: time m = hh3600 + mm60 + ss if (start_timem < end_timem)1.
To calculate the difference between two times, we convert both time values to seconds since midnight using the following formula: time m = hh3600 + mm60 + ss if (start_timem < end_timem)1.In this case, 9:23 is 33,780 seconds and 6:40 is 24,000 seconds. The difference between them is 9,780 seconds. We then convert this back to hours and minutes by dividing by 3600 (the number of seconds in an hour) to get 2 hours and 43 minutes1.