document.write( "Question 822275: How many cups of grape punch containing 10% fruit juice and berry punch containing 20% fruit juice must be added together to create 12 cups of punch with 18% fruit juice?\r
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Algebra.Com's Answer #494749 by stanbon(75887)\"\" \"About 
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How many cups of grape punch containing 10% fruit juice and berry punch containing 20% fruit juice must be added together to create 12 cups of punch with 18% fruit juice?
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\n" ); document.write( "Equation:
\n" ); document.write( "fj + fj = fj
\n" ); document.write( "0.10x + 0.20(12-x) = 0.18*12
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\n" ); document.write( "10x + 20*12 - 20x = 18*12
\n" ); document.write( "-10x = -2*12
\n" ); document.write( "x = (1/5)12
\n" ); document.write( "x = 2.4 cups (amt. of 10% needed)
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\n" ); document.write( "12-x = 9.6 cups (amt. of 20% needed)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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