[tex]\displaystyle\bf\\q=0,5\\\\S=16\\\\S=\frac{b_{1} }{1-q} \\\\\\b_{1} =S\cdot(1-q)=16\cdot(1-0,5)=16\cdot 0,5=8\\\\\\b_{2} =b_{1} \cdot q=8\cdot 0,5=4\\\\\\Otvet: \ b_{2} =4[/tex]
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[tex]\displaystyle\bf\\q=0,5\\\\S=16\\\\S=\frac{b_{1} }{1-q} \\\\\\b_{1} =S\cdot(1-q)=16\cdot(1-0,5)=16\cdot 0,5=8\\\\\\b_{2} =b_{1} \cdot q=8\cdot 0,5=4\\\\\\Otvet: \ b_{2} =4[/tex]