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2) 40 min
Obliczenia:
1) 4/3 x 60 min = 1 h 20 min
2)2/3 x 60 min = 40 min
1) 4/3h=4*20=80min=1h 20min
2) 2/3=2*20=40min
Proszę, Liczę na Naj :)