A coffee company wants a new flavor of Cajun coffee. How many pounds of $11 a pound coffee should be added to 30 pounds of coffee worth $3 a pound to get a mixture worth $5 a pound?

Let x is the amount of $11 per pound coffee

then the equation will be,

11x + 3 (30) = 5 (x + 30)

11x + 90 = 5x + 150

11x - 5x = 150 - 90

6x = 60

x = 10

So, $10 is the amount of $11 per coffee that should be added