SOLUTION: Gabe​ Amodeo, a nuclear​ physicist, needs 60 liters of a 60​% acid solution. He currently has a 50% solution and a 70% solution. How many liters of each does he

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Question 1032288: Gabe​ Amodeo, a nuclear​ physicist, needs 60 liters of a 60​% acid solution. He currently has a 50% solution and a 70% solution. How many liters of each does he need to make the needed 60 liters of 6060​% acid​ solution?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
acid
percent ---------------- quantity
Solution I 50.00% ---------------- x liters
Solution II 70.00% ------ 60 - x liters
Mixture 60.00% ---------------- 60
60
50.00% x + 70.00% ( 60 - x ) = 60.00% * 60
50 x + 70 ( 60 - x ) = 3600
50 x + 4200 - 70 x = 3600
50 x - 70 x = 3600 - -4200
-20 x = -600
/ -20
x = 30 liters 50.00% Solution I
30 liters 70.00% Solution II

m.ananth@hotmail.ca