If the sun rises at 5:30 AM in summer, what time is it 3 hours later?
8:30 AM.
During summer, a swimming pool opens at 10:00 AM and closes at 6:00 PM. How many hours is it open?
8 hours
A movie starts at 2:15 PM and ends at 4:00 PM. How long is the movie?
1 hour 45 minutes