document.write( "Question 550051: If X kg of tea of brand A at $Y per Kg is mixed with Y kg of tea of brand B at $X per kg, then the average cost per kg of the mixture is ? \n" ); document.write( "
Algebra.Com's Answer #358374 by josmiceli(19441)\"\" \"About 
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\"+%28+Y+%2B+X+%29+%2F+%28+X+%2B+Y+%29+\" $/kg
\n" ); document.write( "\"+%28+Y+%2B+X+%29+%2F+%28+X+%2B+Y+%29++=+1+\"
\n" ); document.write( "The average cost per kg is $1
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