How Many Milliliters of a 5% Acid Solution and a 13

Multiple Choice

How many milliliters of a 5% acid solution and a 13% acid solution should be used to make 200 ml of an 8% acid solution? Choose the system that would solve the application. Let x = number of liters of 5% acid solution and y = number of liters of 13% acid solution.

A) $\left\{ \begin{array} { l } x + y = 200 \\.05 x + .13 y = 16\end{array} \right.$
B) $\left\{ \begin{array} { l } x + y = 200 \\.05 x + .13 y = 200\end{array} \right.$
C) $\left\{ \begin{array} { l } x + 200 = y \\.05 x + .13 y = 16\end{array} \right.$
D) $\left\{ \begin{array} { l } x + y = 200 \\.05 x + .13 y = 190\end{array} \right.$