document.write( "Question 156986: please help me solve this problem:
\n" ); document.write( "Sarah sells a fruit juice that she makes by mixing together fruit juice concentrate and water. She wants her mixture to contain 30 liters of 15% strength juice. How much of the fruit juice concentrate will she need if the concentrate contains 90% juice?
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Algebra.Com's Answer #115753 by nerdybill(7384)\"\" \"About 
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Let j = amount of juice concentrate
\n" ); document.write( "30 - j = amount of water
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\n" ); document.write( ".90j = .15(30)
\n" ); document.write( "j = (.15(30))/.90
\n" ); document.write( "j = (15(30))/90
\n" ); document.write( "j = (15)/3
\n" ); document.write( "j = 5 liters (juice concentrate)\r
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