47*0.1=4.7
31.2*0.2=6.24
(4.7+6.24)/(47+31.2)=0,14
присерно 14 процентов
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47*0.1=4.7
31.2*0.2=6.24
(4.7+6.24)/(47+31.2)=0,14
присерно 14 процентов