document.write( "Question 233645: How much 30% solution and 70% solution need to be combined to make 80 ml of a 60% solution? \n" ); document.write( "
Algebra.Com's Answer #172449 by nerdybill(7384)\"\" \"About 
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How much 30% solution and 70% solution need to be combined to make 80 ml of a 60% solution?
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\n" ); document.write( "Let x= amount of 50% solution added
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\n" ); document.write( "80-x = amount of 70% solution added
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\n" ); document.write( ".30x + .70(80-x) = .60(80)
\n" ); document.write( ".30x + 56 - .70x = 48
\n" ); document.write( "56 - .40x = 48
\n" ); document.write( "-.40x = -8
\n" ); document.write( "x = 32 ml (of 30% solution)
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\n" ); document.write( "70% solution:
\n" ); document.write( "80-x = 80-32 = 48 ml (of 70% solution)\r
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