document.write( "Question 256527: cara is preparing an acid solution. She needs 200 milliliters of 48% concentration solution. Cara has 60% and 40% concentration solutions in her lab. How many milliliters of 40% acid solution should be mixed with 60% acid solution to make the required amount of 48% acid solution\r
\n" ); document.write( "\n" ); document.write( "can you please solve it using matrices, when I try it change the problem to a matrix equation, and then try to solve it, but I never get the right answer.\r
\n" ); document.write( "\n" ); document.write( "Thank You!!
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Algebra.Com's Answer #188645 by drk(1908)\"\" \"About 
You can put this solution on YOUR website!
This is a mixture problem. Here is the table based on the given information:
\n" ); document.write( "ACID . . . . . . . .% . . . . . . . . . .ML . . . . . . . .%ML
\n" ); document.write( "60% . . . . . . . . .60 . . . . . . . . . m . . . . . . . .60m
\n" ); document.write( "40% . . . . . . . . .40 . . . . . . . .200-m . . . .. 8000-40m
\n" ); document.write( "MIX . . . . . . . .. . 48 . . . . . . .. 200 . . . . . . .9600
\n" ); document.write( "In the 3rd column add the first 2 to get the last number. We get
\n" ); document.write( "60m + 8000 - 40m = 9600
\n" ); document.write( "20m + 8000 = 9600
\n" ); document.write( "20m = 1600
\n" ); document.write( "m = 80
\n" ); document.write( "200-m = 120.
\n" ); document.write( "She needs 120ML of 40% acid.
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