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basia ma 25
razem mają 137
0,7 * 40 = 28 - autografy ani 28 : 100 = 0,28 - 1 %
0,28 * 40 = 11,2 - autografy basi
40%×70=40/100×70/1=24/1=24
70-24=46-ania
40%×46=40/100×46/1=18,4-basia