document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=423843>Question 423843</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me solve the story problem : One solution contains 50% alcohol and another solution contains 80% alcohol. How many liters of each solution should be mixed to produce 10.5 liters of a 70% alcohol solution? </SPAN>\n" );
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document.write( "Let x = amount (liters) of 50% solution<BR>\n" );
document.write( "then<BR>\n" );
document.write( "10.5-x = amount of 80% solution<BR>\n" );
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document.write( ".50x + .80(10.5-x) = .70(10.5)<BR>\n" );
document.write( ".50x + 8.4 - .80x = 7.35<BR>\n" );
document.write( ".50x - .80x = -1.05<BR>\n" );
document.write( "-.30x = -1.05<BR>\n" );
document.write( "x = 3.5 liters (50% alcohol)<BR>\n" );
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document.write( "80% alcohol:<BR>\n" );
document.write( "10.5-x = 10.5-3.5 = 7 liters </SPAN>\n" );
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