document.write( "Question 422600: An advertisement for a grape juice claims that the drink contains 10 percent grape juice. How much pure grape juice would need to be added to 5 quarts of drink to obtain a mixture containing 40 percent grape juice \n" ); document.write( "
Algebra.Com's Answer #294974 by ankor@dixie-net.com(22740)\"\" \"About 
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grape juice claims that the drink contains 10 percent grape juice.
\n" ); document.write( " How much pure grape juice would need to be added to 5 quarts of drink to obtain
\n" ); document.write( " a mixture containing 40 percent grape juice
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\n" ); document.write( "Let x = amt of pure grape juice required to accomplish this
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\n" ); document.write( ".10(5) + 1x = .40(x + 5)
\n" ); document.write( ".5 + x = .4x + 2
\n" ); document.write( "x - .4x = 2 - .5
\n" ); document.write( ".6x = 1.5
\n" ); document.write( "x = \"1.5%2F.6\"
\n" ); document.write( "x = 2.5 qts of pure grape juice required
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\n" ); document.write( "Confirm this solution
\n" ); document.write( ".1(5) + 2.5 + .4(2.5+5)
\n" ); document.write( ".5 + 2.5 = .4(7.5)
\n" ); document.write( "3 = 3, a good equation \n" ); document.write( "
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