document.write( "Question 770526: In a certain medical test designed to measure carbohydrate tolerance, an adult drinks 3 ounces of a 20% glucose solution. When the test is administered to a child, the glucose concentration must be decreased to 10%. How much 20% glucose solution and how much water should be used to prepare 3 ounces of 10% glucose solution? \n" ); document.write( "
Algebra.Com's Answer #469593 by josgarithmetic(39618)![]() ![]() ![]() You can put this solution on YOUR website! {pure sugar}/{resulting solution}={concentration of resulting solution}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "u = unknown ounces of 20% glucose \n" ); document.write( "w = unknown ounces of water\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "STEPS \n" ); document.write( "----------------- \n" ); document.write( "20u=10u+10w \n" ); document.write( "10u=10w \n" ); document.write( "u=w \n" ); document.write( "----------------- \n" ); document.write( "u+w=3 \n" ); document.write( "if u=w then substitute \n" ); document.write( "u+u=3 \n" ); document.write( "2u=3 \n" ); document.write( "u=3/2 \n" ); document.write( "--------------------- \n" ); document.write( " |