Cevap :
1saat=60dk 60dk=3600sn 4saat=3600.4=14400 eder 15dk=60.15=900+ 14400=15300
4 saati ilk dk ya çevirelim
4sa.60=240dk
240dk.60=14.400
1saat=60dk 60dk=3600sn 4saat=3600.4=14400 eder 15dk=60.15=900+ 14400=15300
4 saati ilk dk ya çevirelim
4sa.60=240dk
240dk.60=14.400