SOLUTION: how many liters of a 8% solution of salt should be added to a 23% solution to obtain 645 liters of a 14% solution

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Question 941705: how many liters of a 8% solution of salt should be added to a 23% solution to obtain 645 liters of a 14% solution
Answer by lwsshak3(11628) About Me  (Show Source):
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how many liters of a 8% solution of salt should be added to a 23% solution to obtain 645 liters of a 14% solution
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let x=amt of 8% solution to be added
645-x=amt of 23% solution to be used
..
8%x+23%(645-x)=14%*645
.08x+148.35-.23x=90.3
.15x=50.05
x=387
liters of a 8% solution of salt to be added=387