SOLUTION: A wild birdseed mix is made by combining 100 lb of millet seed costing $.60 per pound with sunflower seeds costing $1.10 per pound. How many pounds of sunflower seeds are needed to

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Question 548881: A wild birdseed mix is made by combining 100 lb of millet seed costing $.60 per pound with sunflower seeds costing $1.10 per pound. How many pounds of sunflower seeds are needed to make a mixute that costs $.70 per pound?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
--------price ---------------- quantity
Millet seed 0.6 ---------------- 100 lb
sun flower seed 1.1 ---------------- x lb
Mixture 0.7 ---------------- 100 + x lb

0.6*100+1.1x=0.7(100+x)
60+1.1x =70+0.7x
1.1x-0.7x=70-60
0.4x=10
/0.4
x= 25
25 lb of sun flower seed