SOLUTION: two acid solutions are available. One has a concentration of 20% acid and another that is 45% acid. How much of each acid must be mixed to obtain a 9L acid solution of 30% concentr
Algebra ->
Customizable Word Problem Solvers
-> Mixtures
-> SOLUTION: two acid solutions are available. One has a concentration of 20% acid and another that is 45% acid. How much of each acid must be mixed to obtain a 9L acid solution of 30% concentr
Log On
Question 974996: two acid solutions are available. One has a concentration of 20% acid and another that is 45% acid. How much of each acid must be mixed to obtain a 9L acid solution of 30% concentration? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! two acid solutions are available. One has a concentration of 20% acid and another that is 45% acid. How much of each acid must be mixed to obtain a 9L acid solution of 30% concentration?
------
Equation::
acid + acid = acid
0.20x + 0.45(9-x) = 0.30*9
-------
20x + 45*9 - 45x = 30*9
-25x = -15*9
x = (3/5)9
x = 27/5
x = 5.4L (amt. of 20% solution needed)
9-x = 3.6L (amt. of 45% solution needed)
--------------
Cheers,
Stan H.
----------
(