Answer:
44.75 hours
Explanation:
You want the hours worked during the week, given the start, finish, and lunch break times.
Hours worked
Hours worked will be the difference between the finish time and the start time, less the duration of the lunch break. The subtraction is more easily done correctly if the finish time is written using a 24-hour clock.
For example, on Monday, the hours worked are ...
17:25 -8:15 -0:45 = (17 -8) +(:25 -:15 -:45)
= 9 - :35 = 8:25 . . . hours:minutes
We find it convenient to let a spreadsheet do the tedious repetitive arithmetic. The total work time is reported in HH:MM in the attached. We recognize 45 minutes is 0.75 hours, so ...
hours worked = 44.75 for the week.
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Additional comment
In the spreadsheet, we have added 12 hours to the finish time before subtracting the start time and lunch duration. The total is formatted as a "duration" using a custom time format that eliminates the display of seconds. This way, the hours can be a number in excess of 24.
Internally, the spreadsheet keeps time as a fraction of a day. The total hours shown can be converted to decimal hours by multiplying by 24 and formatting the result as an ordinary decimal number. (We assume you would want decimal hours for the purpose of computing pay.)
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