document.write( "Question 198051: 9 gallons of a sugar solution was mixed with 6 gallons of a 90% sugar solution to make a 84% sugar solution. FInd the percent concentration of the first solution. \n" ); document.write( "

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9 gallons of a sugar solution was mixed with 6 gallons of a 90% sugar
\n" ); document.write( " solution to make a 84% sugar solution. FInd the percent concentration
\n" ); document.write( " of the first solution.
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\n" ); document.write( "Let x = the percent of the 9 gallon sugar solution
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\n" ); document.write( "9x + 90(6) = 84(9+6)
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\n" ); document.write( "9x + 540 = 1260
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\n" ); document.write( "9x = 1260 - 540
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\n" ); document.write( "9x = 720
\n" ); document.write( "x = $\"720%2F9\"$
\n" ); document.write( "x = 80% is the 1st solution
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\n" ); document.write( "Check:
\n" ); document.write( "80(9) + 90(6) = 84(15)
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