3 hours and 15 minutes.
How many seconds are in 3 hours and 15 minutes.
1 minute = 60 seconds
15 minutes = 60 × 15 = 900 seconds
1 hour = 60 minutes = 60 × 60 = 3,600 seconds
3 hours = 3 × 3,600 = 10,800 seconds
3 hours and 15 minutes = 10,800 + 900 = 11,700 seconds
