Final answer:
Bethany was running for 70 minutes, which is calculated by subtracting her start time of 7:55 from her end time of 9:05, resulting in 1 hour and 10 minutes of running.
Step-by-step explanation:
To determine how long Bethany was running, we need to calculate the difference in time from when she started at 7:55 to when she finished at 9:05. This calculation involves subtracting the start time from the end time.
The difference in hours and minutes can be found by subtracting the start time from the end time. Firstly, let's convert both times into minutes past midnight:
- 7:55 AM = 7 hours and 55 minutes
- 9:05 AM = 9 hours and 5 minutes
Now convert these times into pure minutes:
- 7 hours x 60 minutes/hour + 55 minutes = 475 minutes
- 9 hours x 60 minutes/hour + 5 minutes = 545 minutes
Next, we subtract the start time in minutes from the end time in minutes:
545 minutes - 475 minutes = 70 minutes
Therefore, Bethany was running for 70 minutes, which is 1 hour and 10 minutes.