plss pa help po math

that's the answer, sana makatulong(;
Answer:
Starting time Duration Ending time
7:00 AM 30 min. 7:30 AM
8:00 AM 17 hours 12:00 PM
12:30 PM 45 min. 1:15 AM
3:40 PM 4 hours and 7:50 PM
10 min.
9:00 PM 10 hours and 6:30 AM
30 min
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