At a prefects camp,a group of prefects started their training at 09 30.They then stopped for a 3/4h(fraction) lunch break.If their lunch break ended at 13 30,how long did their training last?
total session including lunch
= 13:00 - 9:30
= 4:00
session excluding lunch
= 4:00 - .45
= 3:60 - 45
= 3:15 or 3 hours and 15 minutes