Sunflower seeds selling for 70 cents per pounde are mixed with finch food selling for 90 cents per pound to create a 13.5 pound mixture worth $11.05. how many pounds of each seed should be used to make the mixture

13.5 pounds for each seed.

Step-by-step explanation:

0.7$ of sunflower seed per pound 0.9$ of finch seed per pound

Because 1 $ = 100 cent

So 0.7 * 5.5 = 3.85 $

3.85$ sunflower seed add 5.5 pound

0.9 * 8 = 7.2$ finch seed add 8 pound

8 + 5.5 = 13.5