document.write( "Question 153663: A hospital staff mixed 70% disinfectant solution with a 30% disinfectant solution. How many liters of each were used to make a 30L of a 45% disinfectant
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\n" ); document.write( "Let x = amt of 70% disinfectant
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\n" ); document.write( "the resulting amt is to be 30L, therefore:
\n" ); document.write( "(30-x) = 30% stuff
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Algebra.Com's Answer #113114 by ankor@dixie-net.com(22740)\"\" \"About 
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A hospital staff mixed 70% disinfectant solution with a 30% disinfectant solution. How many liters of each were used to make a 30L of a 45% disinfectant
\n" ); document.write( ":
\n" ); document.write( "Let x = amt of 70% disinfectant
\n" ); document.write( ":
\n" ); document.write( "the resulting amt is to be 30L, therefore:
\n" ); document.write( "(30-x) = 30% stuff
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\n" ); document.write( "Write a decimal equation representing this problem
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\n" ); document.write( ".7x + .3(30-x) = .45(30)
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\n" ); document.write( ".7x + 9 - .3x = 13.5
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\n" ); document.write( ".7x - .3x = 13.5 - 9
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\n" ); document.write( ".4x = 4.5
\n" ); document.write( "x = \"4.5%2F.4\"
\n" ); document.write( "x = 11.25L of 70% stuff required
\n" ); document.write( "then
\n" ); document.write( "30 - 11.25 = 18.75L of 30%
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\n" ); document.write( "Check solution:
\n" ); document.write( ".7(11.25) + .3(18.75) = .45(30)
\n" ); document.write( " 7.875 + 5.625 = 13.5; confirms our solutions\r
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