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0,8 x 0,5= 0,4 zad 22
0,4 m = 40dm
40litrów
30 dag = 0,3 kg - ser
60 dag = 0,6 kg - wędlina zad 23
70 dag = 0,7 kg - cukierki
0,3 x 23,50zł = 7,05 zł
0,6 x 18,70 = 11,34
0,7x 21,40=14,98
7,05+11,34+14,98=33,37
50,00-33,37=16,63