We can convert any of these hours into decimals to solve this question. In this way, we have:
Monday: 8:15 ---> (15/60= 1/4 = 0.25) ---> Monday: 8.25.
Tuesday: 7:30 ---> (30/60 = 1/2 = 0.5) ---> Tuesday: 7.5
Wednesday: 8:45 ---> (45/60= 3/4 = 0.75) --->Wednesday: 8.75.
Thursday: 7:00 ---> Thursday: 7.00.
Friday: 9:15 ---> Friday (15/60 = 1/4 = 0.25) ---Friday: 9.25
Then, we need to sum all of these values:
8.25
7.50
8.75
7.00
9.25
____
40.75 hours
Then, you worked 40.75 hours in a week (in decimals).