document.write( "Question 754673: If A + B = 3( C + D),what is the average of A,B,C,and D?
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Algebra.Com's Answer #459249 by jim_thompson5910(35256)\"\" \"About 
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Average = (A+B+C+D)/4\r
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\n" ); document.write( "\n" ); document.write( "Average = (3(C+D)+C+D)/4\r
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\n" ); document.write( "\n" ); document.write( "Average = (3C+3D+C+D)/4\r
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\n" ); document.write( "\n" ); document.write( "Average = (4C+4D)/4\r
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\n" ); document.write( "\n" ); document.write( "Average = 4C/4+4D/4\r
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\n" ); document.write( "\n" ); document.write( "Average = C+D
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