[tex]\begin{gathered} \text{Simple interest = }\frac{\text{PRT}}{100} \\ P=\text{ principal}=8000 \\ R=\text{rate}=2\text{ \%} \\ T=\text{Time}=4 \\ \text{simple interest = }\frac{8000\times3\times4}{100} \\ \text{simple interest=}\frac{96000}{100} \\ \text{simple interest=\$960} \end{gathered}[/tex]