Short Answer 
The total work time calculated from 7:30 AM to 4:00 PM is 8.5 hours. After subtracting a 30-minute lunch break, the actual hours worked is 8 hours, which reflects your productivity for that day.
Step 1: Calculate Total Time Worked
Begin by determining the total time between when you started and finished work. In this case, you clocked in at 7:30 AM and clocked out at 4:00 PM. To find the total time worked, subtract the start time from the finish time:
- 4:00 PM – 7:30 AM = 8.5 hours
Step 2: Subtract Lunch Break
Next, account for any breaks taken during the workday. In this example, you took a 30-minute lunch break. To find the actual hours worked, subtract this break from the total time calculated:
- 8.5 hours – 0.5 hours (30 minutes) = 8 hours
Step 3: Finalize Your Working Hours
After subtracting the lunch break, the result indicates your total productivity for the day. Therefore, you can conclude that on this day, you worked a total of 8 hours. It’s crucial to keep accurate track of your time to ensure proper pay and productivity assessments.