document.write( "Question 453872: How much decaffeinated coffee and 50% caffeine coffee should be mixed to produce 25 cups of 40%caffeine coffee? \n" ); document.write( "
Algebra.Com's Answer #312437 by jorel1380(3719)\"\" \"About 
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25x.40=10 cups caffeine
\n" ); document.write( ".50x=10
\n" ); document.write( "x=10/.50=20
\n" ); document.write( "You need 20 cups of 50% coffee and 5 cups caffeine-free coffee to make 25 cups of 40% caffeine coffee..
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