Question

Avery is mixing red dye with brown dye to make a maroon dye she needs less than 200 ml of the maroon dye. She wants to mix at least 2 times as much red the as brown dye

Answer 1

To answer this item, we let x and y be the amounts (in mL) of the red and the brown dyes, respectively. The equations that would allow us to answer the question are,
                               x + y < 200
                                  
                                    x ≤ 2y
The values of x and y in the inequalities are therefore 133.33 mL and 66.67 mL.