A Total of $25,000 Was Invested in Two Accounts for One

Multiple Choice

A total of $25,000 was invested in two accounts for one year and the amount earned was $1,550. Part of the money was invested at 6% and the rest at 7%. Write a system of two equations in two unknowns that would model the situation. Let x = amount invested at 6% and y = amount invested at 7%.

A) $\left\{ \begin{array} { l } x + y = 1,550 \\.06 x + .07 y = 25,000\end{array} \right.$
B) $\left\{ \begin{array} { l } x + y = 25,000 \\.6 x + 7 y = 1,550\end{array} \right.$
C) $\left\{ \begin{array} { l } x + y = 1,550 \\.6 x + 7 y = 25,000\end{array} \right.$
D) $\left\{ \begin{array} { l } x + y = 25,000 \\.06 x + .07 y = 1,550\end{array} \right.$