ricciardisergio57
ricciardisergio57 ricciardisergio57
  • 22-11-2021
  • Mathematics
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Use the simple interest formula to find the principal invested if $790 interest was earned in 5 years at an interest rate of 4%

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jdoe0001 jdoe0001
  • 22-11-2021

[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\dotfill&\$790\\ P=\textit{original amount deposited}\\ r=rate\to 4\%\to \frac{4}{100}\dotfill &0.04\\ t=years\dotfill &5 \end{cases} \\\\\\ 790=P(0.04)(5)\implies \cfrac{790}{(0.04)(5)}=P\implies \boxed{3950=P}[/tex]

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