Ans: C
The monthly salary of Peter
The monthly salary of Peter
$\begin{array}{cl}
= & 33\ 360 \div (1+25\%) \\
= & \$26\ 688
\end{array}$
The monthly salary of Teresa
$\begin{array}{cl}
= & 26\ 688 \div (1-25\%) \\
= & \$35\ 584
\end{array}$