now, this is for 3 months, and we're assuming, I guess it doesn't really matter, but using simple interest.
now, 3 months is not even a year, there are 12 months in 1 year, so 3 months is 3/12 years, or 1/4.
[tex]\bf \qquad \textit{Simple Interest Earned}\\\\
I = Prt\qquad
\begin{cases}
I=\textit{interest earned}\\
P=\textit{original amount deposited}\to& \$1500\\
r=rate\to 12.5\%\to \frac{12.5}{100}\to &0.125\\
t=years\to \frac{3}{12}\to &\frac{1}{4}
\end{cases}
\\\\\\
I=1500\cdot 0.125\cdot \cfrac{1}{4}\implies 46.875\approx 46.88[/tex]
