### Home > A2C > Chapter 11 > Lesson 11.2.4 > Problem 11-89

11-89.

Betty's Quick Stop makes a

Set up a system of equations.

Make *x* = lunch and *y* = dinner.

Set the equation like a mixture problem.

Distribute.

Solve for *x*.

11-89.

Betty's Quick Stop makes a

Set up a system of equations.

Make *x* = lunch and *y* = dinner.

Set the equation like a mixture problem.

Distribute.

Solve for *x*.