So,
Remember that the formula for simple interest is:
[tex]I=PRT[/tex]I is the interest; this is what you're solving for.
P is the principle; the amount of money ($).
R is the rate; the percentage rate (%).
T is the time. (In years)
If we replace our values:
[tex]\begin{gathered} I=300\cdot0.05\cdot5 \\ I=75 \end{gathered}[/tex]Therefore, the interest is $75.