Salutations!
If I began studying at 7:50 and studied until 11:05. How much time did I spend studying?
So let's solve this!
To work out the amount of hours studying, all you have to do I subtract 7:50 by 11:50.
Let's form this into statements!
Starting time = 7:50PM
Finishing time = 11:05
Amount of hours spent in studying = 11:05 - 7:50 = 3:55 hours.
You spent 3 hours and 55 minutes studying.
To be assure your answer, you can add 7:50 and 3:55. It gives you the result of 11:05.
Hope I helped :D