document.write( "Question 419167: how many pounds of fresh water must be added to 30 pounds of sea water containing 16% salt (by weight) in order to reduce the percentage of salt to 12%? \n" ); document.write( "
Algebra.Com's Answer #293386 by stanbon(75887)\"\" \"About 
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how many pounds of fresh water must be added to 30 pounds of sea water containing 16% salt (by weight) in order to reduce the percentage of salt to 12%?
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\n" ); document.write( "Equation:
\n" ); document.write( "salt + salt = salt
\n" ); document.write( "0*x + 0.16*30 = 0.12(x+30)
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\n" ); document.write( "Multiply thru by 100 to get:
\n" ); document.write( "0 + 16*30 = 12x + 12*30
\n" ); document.write( "12x = 4*30
\n" ); document.write( "x = (1/3)30
\n" ); document.write( "x = 10 lbs (amt. of fresh water needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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