47 руб - 100%
x руб - 30%
[tex]\displaystyle\bf\\x=\frac{47\cdot 30}{100} =14,1\\\\Otvet \ : \ 14,1[/tex]
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47 руб - 100%
x руб - 30%
[tex]\displaystyle\bf\\x=\frac{47\cdot 30}{100} =14,1\\\\Otvet \ : \ 14,1[/tex]