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| rev | Admin | (Created page with " '''Solution: E''' <math display = "block"> \begin{aligned} & 90.17=4 a_{6 j}+X v^6 \\ & 132.47=4 a_{6 j}+1.6 X v^6 \end{aligned} </math> Multiply the first equation by 1.6 : <math display = "block"> 144.272=6.4 a_{6 j j}+1.6 X v^6 </math> Subtract the second equation: <math display = "block"> 11.802=2.4 a_{6 / j} </math> Use annuity calculation on BA II Plus <math display = "block"> j=6 \%=\frac{i^{(2)}}{2}, i^{(2)}=12 \% </math> {{soacopyright | 2023 }}") | Nov 19'23 at 22:19 | +464 |