SOLUTION:
How much pure acid should be mixed with 2 gallons of a 60% acid solution in order to get a 90% acid​ solution?
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Question 1046721:
How much pure acid should be mixed with 2 gallons of a 60% acid solution in order to get a 90% acid solution?
Found 2 solutions by addingup, josmiceli:
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
x+0.6(2) = 0.9(x+2)
x+1.2 = 0.9x+1.8
0.1x = 0.6
x = 6 gallons
You need 6 gallons of pure acid added to your 2 gallons at 60% in order to get 8 gallons of a 90% solution
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = gallons of pure acid needed
= gallons of pure acid in 60% solution
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6 gallons of pure acid are needed
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check:
OK
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