document.write( "Question 567631: In a chemistry class, 4 liters of a 4% silve iodide solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed? \n" ); document.write( "
Algebra.Com's Answer #366703 by ankor@dixie-net.com(22740)\"\" \"About 
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In a chemistry class, 4 liters of a 4% silver iodide solution must be mixed with a 10% solution to get a 6% solution.
\n" ); document.write( " How many liters of the 10% solution are needed?
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\n" ); document.write( "Let x = amt of 10% solution required
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\n" ); document.write( ".04(4) + .10x = .06(x+4)
\n" ); document.write( ".16 + .10x = .06x + .24
\n" ); document.write( ".10x - .06x = .24 - .16
\n" ); document.write( ".04x = .08
\n" ); document.write( "x = .08/.04
\n" ); document.write( "x = 2 liters of 10% solution needed
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\n" ); document.write( "Check this
\n" ); document.write( ".04(4) + .10(2) = .06(2 + 4)
\n" ); document.write( ".16 + .20 = .06(6)
\n" ); document.write( ".36 = .36; confirms our solution \n" ); document.write( "
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