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1 dzień : 21/6 = 7/2= 70/20
2 dzień : 26/8= 13/4 =65/20
3 dzień: 17/5 = 68/ 20
Pierwszego dnia szedł najszybciej
zad 19
a) 3/7=6/14< 7/14 < 4/7=8/14
b)1/4= 6/24 < 7/24 <1/3=8/24