Solve the System of Equations by Using Substitution $$\left\{ \begin{array} { l } 5 x + 3 y = 80 \\2 x + y = 30\end{array} \right.$$

Multiple Choice

Solve the system of equations by using substitution.
- $$\left\{ \begin{array} { l } 5 x + 3 y = 80 \\2 x + y = 30\end{array} \right.$$

A) x = 0, y = 0
B) x = 10, y = 10
C) x = 0, y = 10
D) x = 10, y = 0