zamień jednostki: 0.2h= ile minut, ile sekund 0.5h=ile minut, ile sekund i tak kolejne... 1/2h= 1/5h= Z góry dziekuje

1 h = 60 min = 3600 s [latex]0,2 h= frac{2}{10}*60=12 min = frac{2}{10}*3600=720 s \ \ 0,5 h= frac{5}{10}*60=30 min = frac{5}{10}*3600=1800 s \ \ frac{1}{2} h = frac{1}{2}*60=30 min = frac{1}{2}*3600=1800 s \ \ frac{1}{5} h= frac{1}{5}*60=12 min =frac{1}{5}*3600=720 s [/latex]