SOLUTION: 1- Arielle needs 9 liters of a 65% solution of sulfuric acid for a research project molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of
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Question 927354: 1- Arielle needs 9 liters of a 65% solution of sulfuric acid for a research project molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 81% solution and the other an unlimited supply of the 45% solution. How many liters of each solution should Arielle use?
Answer by lwsshak3(11628) (Show Source): You can put this solution on YOUR website!
1- Arielle needs 9 liters of a 65% solution of sulfuric acid for a research project molecular biology. He has two supplies of sulfuric acid solution: one is an unlimited supply of the 81% solution and the other an unlimited supply of the 45% solution. How many liters of each solution should Arielle use?
***
let x=amt of 81% solution to use
9-x=amt of 45% solution to use
..
81%x+45%(9-x)=65%*9
.81x+4.05-.45x=5.85
.36x=1.8
x=5
9-x=4
amt of 81% solution to use=5 liters
amt of 45% solution to use=4 liters
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