document.write( "Question 236811: A chemist needs 160 milliliters of a 25% solution but has only 5% and 69% solutions available. Find how many milliliters of each that should be mixed to get the desired solution. \n" ); document.write( "
Algebra.Com's Answer #174206 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! A chemist needs 160 milliliters of a 25% solution but has only 5% and 69% solutions available. Find how many milliliters of each that should be mixed to get the desired solution. \n" ); document.write( ". \n" ); document.write( "Let x = liters of 5% solution \n" ); document.write( "then \n" ); document.write( "160-x = liters of 69% solution \n" ); document.write( ". \n" ); document.write( ".05x + .69(160-x) = .25(160) \n" ); document.write( ".05x + 110.4 - .69x = 15 \n" ); document.write( "110.4 - .64x = 15 \n" ); document.write( "-.64x = -95.4 \n" ); document.write( "x = 149.0625 milliliters (5% solution) \n" ); document.write( ". \n" ); document.write( "69% solution: \n" ); document.write( "160-x = 160-149.0625 = 10.9375 milliliters (69% solution) \n" ); document.write( " \n" ); document.write( " |