document.write( "Question 61054: What quantity of 60% acid solution must be mixed with 30% acid solution to produce 300mL of a 50% solution? \n" ); document.write( "
Algebra.Com's Answer #41973 by Earlsdon(6294)\"\" \"About 
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Let x = the number of ml of 60% acid solution to be added to (300-x) ml of 30% acid solution to obtain 300 ml of 50% acid solution. Change the percentages to their decimal equivalents.\r
\n" ); document.write( "\n" ); document.write( "0.6x + 0.3(300-x) = 0.5(300) Simplify and solve for x.
\n" ); document.write( "0.6x + 90 - 0.3x = 150
\n" ); document.write( "0.3x + 90 = 150
\n" ); document.write( "0.3x = 60
\n" ); document.write( "x = 200 ml
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