document.write( "Question 1129899: A nurse needs 50 mL of a 16% salt solution for a patient. She can only find a 13% salt solution and an 18% salt solution in the supply room. How many millimeters of the 13% solution should be mixed with the 18% solution to produce the desired amount of the 16% solution? \n" ); document.write( "
Algebra.Com's Answer #746529 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A nurse needs 50 mL of a 16% salt solution for a patient. She can only find a 13% salt solution and an 18% salt solution in the supply room. How many millimeters of the 13% solution should be mixed with the 18% solution to produce the desired amount of the 16% solution? \n" ); document.write( "----- \n" ); document.write( "Equation:: \n" ); document.write( "salt + salt = salt \n" ); document.write( "0.13x + 0.18(50-x) = 0.16*50 \n" ); document.write( "----- \n" ); document.write( "13x + 18(50) - 18x = 16*50 \n" ); document.write( "----- \n" ); document.write( "5x = 2*50 \n" ); document.write( "x = 20mL (amt. of 13% solution needed) \n" ); document.write( "50-x = 30mL (amt. of 18% solution needed) \n" ); document.write( "----------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " \n" ); document.write( " |