Zamień  a) 100minut na godziny i sekundy  b) 0,1h na godziny i sekundy  c) 1kwadrans na godziny minuty i sekundy d) 20sekund na minuty i godziny  Pomóżcie 

1 h = 60 min = 3600 s 1 min = 1/60 h 1 s = 1/60 min 1 s = 1/3600 s a) 100 min = 100 : 600h = 1h 40min  = 6 000 s 100 min = 1h 40min = 6 000 s b) 0,1 h = 0,1 * 60min = 6 min = 6 * 60s = 360 s 0,1 h = 6 min = 360 s c) 1 kwadrans = 1/4 h = 1/4 * 60min = 15 min = 15 * 60s = 900 s 1 kwadrans = 15 min = 900 s d) 20s = 20 : 60mi = 1/3 min = 20 : 3600h = 1/180 h 20s = 1/3 min = 1/180 h