SOLUTION: A wild bird seed mix is made by combining 150lb of millet seed costing $.50 per pound with sunflower seeds costing $1.40 per pound. How many pounds of sunflower seeds are needed to

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: A wild bird seed mix is made by combining 150lb of millet seed costing $.50 per pound with sunflower seeds costing $1.40 per pound. How many pounds of sunflower seeds are needed to      Log On


   

Question 985346: A wild bird seed mix is made by combining 150lb of millet seed costing $.50 per pound with sunflower seeds costing $1.40 per pound. How many pounds of sunflower seeds are needed to make a mixture that costs $0.80 per pound
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Let S be the number of pounds of sunflower seed. The total of the result will be 150%2BS
150%2A0.5++%2B+S%2A1.4++=+%28150%2BS%29+%2A+0.8
75+%2B+1.4S+=+120+%2B+0.8S
0.6S+=+45
S+=+75
Add in 75 pounds of sunflower