document.write( "Question 238771: I'm having some problems and need help. In a chemistry class, 3 liters of a 4% silver iodide solution must be mixed with a 10% solutin to get a 6% solution. How many liters of the 10% solution are needed? \n" ); document.write( "

Algebra.Com's Answer #175448 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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In a chemistry class, 3 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( "Write a decimal equiv equation:
\n" ); document.write( ".04(3) + .10x = .06(x + 3)
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\n" ); document.write( ".12 + .1x = .06x + .18
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\n" ); document.write( ".1x - .06x = .18 - .12
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\n" ); document.write( ".04x = .06
\n" ); document.write( "x = $\".06%2F.04\"$
\n" ); document.write( "x = 1.5 liters of 10% solution required
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\n" ); document.write( "Check in the original equation
\n" ); document.write( ".04(3) + .1(1.5) = .06(1.5+3)
\n" ); document.write( ".12 + .15 = .06(4.5)
\n" ); document.write( ".27 = .27; confirms our solution \n" ); document.write( "

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