The formula we'll use for this is the simple interest formula, or:
Where:
<span><span>P is the principal amount, $4000.00.
</span><span>r is the interest rate, 12% per year, or in decimal form, 12/100=0.12.
</span><span>t is the time involved, 3....year(s) time periods.
</span><span>So, t is 3....year time periods.
</span></span>
To find the simple interest, we multiply 4000 × 0.12 × 3 to get that:
<span>
The interest is: $1440.00</span>
