Answer:
7 hours and 25 minutes
The way i did it is, i added 10 minutes to 2:50 pm which makes it 3 pm. Then i added 7 hours to make it 10 pm, after that I added 15 minutes, which makes it 10:15 pm. Finally you add 10 minutes, 7 hours, and 15 minutes which comes to a total of 7 hours and 25 minutes
