Answer:
If you study for 2 hours, with 20-25 minutes of studying and a 5-minute break, you will study for approximately 80-100 minutes. This is because in one hour, there are three sets of 20-25 minutes of studying and two sets of 5-minute breaks. Therefore, in two hours, there will be six sets of 20-25 minutes of studying and four sets of 5-minute breaks. Thus, the total time spent on breaks would be around 20 minutes (4 x 5), leaving approximately 80-100 minutes for studying.