document.write( "Question 703526: a company wants to increase the 10 percent content of its product by adding pure peroxide (100 % peroxide). If x liters of pure peroxide is added to 500 liters of its 10% solution, the concentration C, of the new mixture is given by C = x+0.4/x-0.1. How man liters of pure peroxide should be added to produce a new product that is 28% peroxide? \n" ); document.write( "
Algebra.Com's Answer #433535 by stanbon(75887)\"\" \"About 
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a company wants to increase the 10 percent content of its product by adding pure peroxide (100 % peroxide). If x liters of pure peroxide is added to 500 liters of its 10% solution, the concentration C, of the new mixture is given by C = x+0.4/x-0.1. How man liters of pure peroxide should be added to produce a new product that is 28% peroxide?
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\n" ); document.write( "Equation:
\n" ); document.write( "per + per = per
\n" ); document.write( "0.10*500 + 1.00x = 0.28(500+x)
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\n" ); document.write( "Multiply thru by 100 to get:
\n" ); document.write( "10*500 + 100x = 28*500 + 28x
\n" ); document.write( "72x = 18*500
\n" ); document.write( "x = (1/4)500
\n" ); document.write( "x = 125 liters (amt. to add)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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