30%=0,30=0,3 0,3*1,2=0,36
70%=0,7 0,7*1,1=0,77
0,36+0,77=1,13 1,13-1=0,13=13%
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30%=0,30=0,3 0,3*1,2=0,36
70%=0,7 0,7*1,1=0,77
0,36+0,77=1,13 1,13-1=0,13=13%