SOLUTION: a chemist has two solutions of hcl. one has a 40 concentration and the other has a 25 concentration. how many liters of each solution must be mixed to obtain 112 liters of a 37% so

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Question 1017554: a chemist has two solutions of hcl. one has a 40 concentration and the other has a 25 concentration. how many liters of each solution must be mixed to obtain 112 liters of a 37% solution?
Found 2 solutions by jorel555, ikleyn:
Answer by jorel555(1290) About Me  (Show Source):
You can put this solution on YOUR website!
.4n+.25(112-n)=.37(112)
.4n+28-.25n=41.44
.15n=13.44
n=89.6 liter of .4 concentrate, and 22.4 liters of .25 concentrate ☺☺☺☺

Answer by ikleyn(52792) About Me  (Show Source):
You can put this solution on YOUR website!
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It is a typical mixture word problem. There is a bunch of lessons on mixture problems in this site:
    - Mixture problems
    - More Mixture problems
    - Solving typical word problems on mixtures for solutions
    - Word problems on mixtures for antifreeze solutions
    - Word problems on mixtures for alloys
    - Typical word problems on mixtures from the archive
Read them attentively and become trained in solving word mixture problems.
Become an expert in this area.