SOLUTION: a solution containing 30% juice is mixed with a solution containing 10% juice to make 100 gallons of a 12%juice mixture.how much the 30% juice solution was used

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Question 873236: a solution containing 30% juice is mixed with a solution containing 10% juice to make 100 gallons of a 12%juice mixture.how much the 30% juice solution was used

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
percent ---------------- quantity
Juice type I 30.00% ---------------- x gallons
juice type II 10.00% ------ 100 - x gallons
Mixture 12.00% ---------------- 100
Total 100 gallons
30.00% x + 10.00% ( 100 - x ) = 12.00% * 100
30 x + 10 ( 100 - x ) = 1200
30 x + 1000 - 10 x = 1200
30 x - 10 x = 1200 - -1000
20 x = 200
/ 20
x = 10 gallons 30.00% Juice type I
90 gallons 10.00% juice type II

m.ananth@hotmail.ca