SOLUTION: A tank holds 100 liters of a chemical solution. Currently, the solution has a strength of 60%. How much of this should be drained and replaced with 100% solution to get a final str
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Question 780535: A tank holds 100 liters of a chemical solution. Currently, the solution has a strength of 60%. How much of this should be drained and replaced with 100% solution to get a final strength of 80%? Answer by lwsshak3(11628) (Show Source):
You can put this solution on YOUR website! A tank holds 100 liters of a chemical solution. Currently, the solution has a strength of 60%. How much of this should be drained and replaced with 100% solution to get a final strength of 80%?
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let x=amount 60% solution should be drained and replaced with 100% solution.
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60%(100-x)+100%x=80%*100
60-0.6x+x=80
0.4x=20
x=50
amount of 60% solution should be drained and replaced =50 liters
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