Question

Find the simple interest. Principal ​$200 rate 13​% time 33 months. The interest is ​$ nothing. ​(Round to the nearest​ cent.)

Answer 1

There are 12 months in a year, so in 33 months, there are 33/12 years then.

$\bf \qquad \textit{Simple Interest Earned}\\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\to& \ 200\\ r=rate\to 13\%\to \frac{13}{100}\to &0.13\\ t=years\to &\frac{33}{12} \end{cases} \\\\\\ I=200\cdot 0.13\cdot \cfrac{33}{12}$