document.write( "Question 44781: Solve each problem. Use your choice of methods.\r
\n" ); document.write( "\n" ); document.write( " How many liters (L) of a 10% silver iodide solution must be mixed with 7 L of a 4% silver iodide solution to get a 6% solution?
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Algebra.Com's Answer #29659 by josmiceli(19441)\"\" \"About 
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(.10*L + .04*7) / L + 7 = .06
\n" ); document.write( ".1*L + .28 = .06*L + .42
\n" ); document.write( ".04*L = .42 - .28
\n" ); document.write( "L = .14/.04
\n" ); document.write( "L = 3.5 liters of 10% solution
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\n" ); document.write( "(.10*3.5 + .28) / (3.5 + 7) = .06
\n" ); document.write( "(.35 + .28) / 10.5 = .06
\n" ); document.write( ".63/10.5 = .06
\n" ); document.write( "OK
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