document.write( "Question 840410: Having a lot of trouble with this problem any help is appreciated.\r
\n" ); document.write( "\n" ); document.write( "Carmen needs 30ml of 10% HCI solution, but she has only 5% HCI and 30% HCI solutions. How much of each solution should Carmen use to make the 30ml of 10% HCI solution?
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Algebra.Com's Answer #506156 by josgarithmetic(39617)\"\" \"About 
You can put this solution on YOUR website!
This will only be approximate, because you need to know if the percents are w/w, or w/v, and you also need to know the densities.\r
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\n" ); document.write( "\n" ); document.write( "\"%285u%2B30v%29%2F30=10\" and \"u%2Bv=30\"
\n" ); document.write( "Solve the system for u and v.
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