document.write( "Question 273788: A cough medicine contains 25% alcohol. How much liquid should a pharmacists add to 120 milliliters of the cough medicine so that it contains only 20% alcohol? \n" ); document.write( "
Algebra.Com's Answer #199964 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A cough medicine contains 25% alcohol. How much liquid should a pharmacists add to 120 milliliters of the cough medicine so that it contains only 20% alcohol? \n" ); document.write( "-------------------------- \n" ); document.write( "Equation: \n" ); document.write( "alcohol + alcohol = alcohol \n" ); document.write( "0.25*120 + 0*x = 0.20(120+x) \n" ); document.write( "Multiply thru by 100 to get: \n" ); document.write( "25*120 + 0 = 20*120 + 20x \n" ); document.write( "--- \n" ); document.write( "20x = 5*120 \n" ); document.write( "x = 25 milliliters ( amt. of \"liquid\" that must be added to the mixture) \n" ); document.write( "================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |