document.write( "Question 576574: How many cups of a 18% salt solution must be added to 16 cups of a 25% salt solution to get a 20% salt solution? \r
\n" ); document.write( "\n" ); document.write( "a. 20 cups
\n" ); document.write( "b. 30 cups
\n" ); document.write( "c. 40 cups
\n" ); document.write( "or
\n" ); document.write( "d. 55.5 cups
\n" ); document.write( "

Algebra.Com's Answer #369897 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
How many cups of a 18% salt solution must be added to 16 cups of a 25% salt solution to get a 20% salt solution?
\n" ); document.write( "a. 20 cups
\n" ); document.write( "b. 30 cups
\n" ); document.write( "c. 40 cups
\n" ); document.write( "or
\n" ); document.write( "d. 55.5 cups
\n" ); document.write( "------
\n" ); document.write( "Equation:
\n" ); document.write( "salt + salt = salt
\n" ); document.write( "0.18x + 0.25*16 = 0.20(x+16)
\n" ); document.write( "----
\n" ); document.write( "Multiply thru by 100 to get:
\n" ); document.write( "18x + 25*16 = 20x + 20*16
\n" ); document.write( "2x = 5*16
\n" ); document.write( "x = 40 cups (# of cups of 18% solution)
\n" ); document.write( "----
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( "========
\n" ); document.write( "
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