0,25 h = doby 1 h 3min 2 s = min

1h 3min 2s = 3782s to pierwsze niewiem

0,25 h =¼ doby bo 0.25 to 1/4 1 h 3min 2 s = 63,2 min 1h = 60 min 60 min +3 min +2 s = 63.2min