Simple interest formula:
[tex]I=P*r*t[/tex]P is the principal
r is the interest rate in decimal form
t is the time in years
For the given situation:
[tex]\begin{gathered} P=5000 \\ r=\frac{10}{100}=0.1 \\ t=3 \\ \\ I=5000*0.1*3 \\ I=1500 \end{gathered}[/tex]