document.write( "Question 63785: 4r+2c= 84 if r+c=30 \n" ); document.write( "

Algebra.Com's Answer #44469 by tanimachatterjee(60) $\"\"$ $\"About$

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4r+2c= 84 if r+c=30\r
\n" ); document.write( "\n" ); document.write( " taking common 2(2r+c) = 84
\n" ); document.write( " 2r +c = 42
\n" ); document.write( "
\n" ); document.write( " r +c =30
\n" ); document.write( "substructing we get r =12
\n" ); document.write( " then c =30-12 = 18 \n" ); document.write( "

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