Question

A pet store owner wants to make 600 pounds of birdseed, the sunflower seeds cost $2.30 per pound and the peanut seeds cost $1.40 per pound. The total cost of all the seed used in the mixture was $1200. How much of each seed was used?

Answer 1

Explanation:

Let x be pounds of sunflower used

Let y be pounds of peanut used

x + y = 600

x = 600 - y

1200 = 1.40y + 2.30x

1200 = 1.40y + 2.30(600 - y)

1200 = 1.40y + 1380 - 2.30y

0.9y = 180

y = 200 lb peanut

x = 600 - 200 = 400 lb sunflower