document.write( "Question 455082: How many gallons of a 60% salt solution must be mixed with 30 gallons of a 13% solution to obtain a solution that is 50% salt? \n" ); document.write( "
Algebra.Com's Answer #312432 by amoresroy(361)\"\" \"About 
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Let x = the no. gallons of a 60% salt solution that must be mixed with 30 gallons of a 13% solution to obtain a solution that is 50% salt\r
\n" ); document.write( "\n" ); document.write( ".6x + 30(.13) = .5(30 + x)
\n" ); document.write( " .6x + 3.9 = 15 + .5x
\n" ); document.write( " .1x = 11.1
\n" ); document.write( " x = 111\r
\n" ); document.write( "\n" ); document.write( "111 gallons of a 60% salt solution that must be mixed with 30 gallons of a 13% solution to obtain a solution that is 50% salt.\r
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