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| rev | Admin | (Created page with "'''Solution: B''' <math display = "block"> 900=1000 r a_{\overline{40} \mid 0.05}+900 v^{40} </math> Using BA II Plus: <math display = "block"> \begin{aligned} & 1000 r=45 \\ & P=45 a_{\overline{20} \mid 0.04}+900 v^{20} \\ & P=1022.31 \\ & 1022.31=F r a_{\overline{20} \mid 0.04}+1100 v^{20} \\ & F r=38.28 \end{aligned} </math> {{soacopyright | 2023 }}") | Nov 19'23 at 22:22 | +357 |