posted by raylene on .
Tim and Judy mix two kinds of feed for pedigreed dogs. They wish to make 29 pounds of feed worth $0.47 per pound by mixing one kind worth $0.44 per pound with another worth $0.55 per pound.
How many pounds of the cheaper kind should they use in the mix?
-please help! so confused!
you have 29 total pounds. You want soo many pounds of the 44 cent and so many pounds of the 55 cent feed. So you can make the equation .44x + .55(29-x) = 29 x .47
Solve for x, that will tell you how many pounds of the cheaper kind they should use