SOLUTION: To make a 10% acid solution for chemistry class. Xavier wants to mix some 5% solution with 10L of 20% solution. How many liters of 5% solution should he use.
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Question 906676: To make a 10% acid solution for chemistry class. Xavier wants to mix some 5% solution with 10L of 20% solution. How many liters of 5% solution should he use. Answer by richwmiller(17219) (Show Source):
You can put this solution on YOUR website! 0.05*x+0.2*10=0.1(10+x)
0.05*x+2=1+0.1x
0.05x-0.1x=1-2
-0.05x=-1
x=20 liter at 5% (1) is added to 10 liter at 20%(2) to make 10% of 30 liter(3)
check
0.05*20+0.2*10=0.1(10+20)
1+2=0.1(30)
3=3
ok
