document.write( "Question 265843: A large tank contains 100 gallons of pure water. How many gallons of a saline solution containing 25% salt must be added to obtain a solution that has 10% salt ? \n" ); document.write( "
Algebra.Com's Answer #195396 by stanbon(75887)\"\" \"About 
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A large tank contains 100 gallons of pure water. How many gallons of a saline solution containing 25% salt must be added to obtain a solution that has 10% salt ?
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\n" ); document.write( "Equation:
\n" ); document.write( "salt + salt = salt
\n" ); document.write( "0*100 + 0.25x = 0.10(x+100)
\n" ); document.write( "Multiply thru by 100 and solve for \"x\"
\n" ); document.write( "0 + 25x = 10x + 1000
\n" ); document.write( "15x = 1000
\n" ); document.write( "x = 66 2/3 gallons of 25% saline solution must be add
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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