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| rev | Admin | (Created page with "'''Answer: D''' <math display="block"> \begin{aligned} P & =30,000_{20} \ddot{a}_{40}+P A_{40: 20}^{1} \\ \Rightarrow \quad P & =30,000_{20} \ddot{a}_{40} /\left(1-A_{40: 20}^{1}\right) \\ & =30,000(5.46429) /(1-0.0146346)=166,363 \end{aligned} </math> {{soacopyright|2024}}") | Jan 19'24 at 21:04 | +278 |