SOLUTION: How many gallons of a 20% antifreeze solution and how many gallons of a 50% anitfreeze solution should be mixed to get 30 gallons of a 40% antifreeze solution?
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Question 1113359: How many gallons of a 20% antifreeze solution and how many gallons of a 50% anitfreeze solution should be mixed to get 30 gallons of a 40% antifreeze solution? Answer by mananth(16946) (Show Source):
You can put this solution on YOUR website! component percent ---------------- quantity
Antifreeze I 0.2 ---------------- x ml
Antifreeze II 0.5 ---------------- 30 - x ml
Mixture 0.40 ---------------- 30
0.2 x + 0.5 ( 30 - x ) = 30.00 * 0.40
0.2 x + 15 - 0.5 x = 12.00
0.2 x - 0.5 x = 12 - 15
-0.3 x = -3
/ -0.3
x = 10 gal
20.00% Antifreeze I 10 gal
