SOLUTION: If Amanda mixes a 30% solution with a 50% solution to make a 800 milliliter of a 45% solution. how many milliliter does she use of each solution?

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Question 425669: If Amanda mixes a 30% solution with a 50% solution to make a 800 milliliter of a 45% solution. how many milliliter does she use of each solution?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
800x.45=360
m+n=800
.3m+.5n=360
3m+5n=3600
3m+3n=2400
2n=1200
n=600
m=200
Amanda needs 20 mL of 30% solution to mix with 600 mL of 50% solution..