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)\"\" \"About 
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{pure sugar}/{resulting solution}={concentration of resulting solution}\r
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\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( "\"20%2Au%2F%28u%2Bw%29=10\" and \"u%2Bw=3\"\r
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\n" ); document.write( "\n" ); document.write( "STEPS
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\n" ); document.write( "20u=10u+10w
\n" ); document.write( "10u=10w
\n" ); document.write( "u=w
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\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
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\n" ); document.write( "\"highlight%28u=1%261%2F2%29\" AND \"highlight%28w=1%261%2F2%29\" ounces
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