document.write( "Question 121986: Twenty pounds of a salt-water solution contains fifteen percent salt. How much water must be added to weaken the solution to twelve percent salt? \n" ); document.write( "
Algebra.Com's Answer #89563 by oscargut(2103)\"\" \"About 
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Salt= 20(0,15)=3 pounds, you must add x pounds of water where:
\n" ); document.write( "3/(20+x)=0,12 then 20+x=3/(0,12)=25 then x=5\r
\n" ); document.write( "\n" ); document.write( "You must add 5 pounds of water
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