[tex] \bf ~~~~~~ \textit{Simple Interest Earned}
\\\\
I = Prt\qquad
\begin{cases}
I=\textit{interest earned}\to &\$750\\
P=\textit{original amount deposited}\\
r=rate\to 6\%\to \frac{6}{100}\to &0.06\\
t=years\to &2
\end{cases}
\\\\\\
750=P(0.06)(2)\implies \cfrac{750}{(0.06)(2)}=P\implies 6250=P [/tex]