document.write( "Question 560532: question-A man has some hens and cows.If the number of heads be 48 and the number of feet equals 140,then the number of hens will be? \n" ); document.write( "

Algebra.Com's Answer #363933 by mananth(16946) $\"\"$ $\"About$

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cows x numbers
\n" ); document.write( "hens y numbers
\n" ); document.write( "
\n" ); document.write( "x+y=48 .............1
\n" ); document.write( "4x+2y=140 .............2
\n" ); document.write( "Eliminate y
\n" ); document.write( "multiply (1)by -2
\n" ); document.write( "Multiply (2) by 1
\n" ); document.write( "-2x-2y=-96
\n" ); document.write( "4x+2y= 140
\n" ); document.write( "Add the two equations
\n" ); document.write( "2x=44
\n" ); document.write( "/2
\n" ); document.write( "x= 22
\n" ); document.write( "plug value of x in (1)
\n" ); document.write( "x+y=48
\n" ); document.write( "22+y=48
\n" ); document.write( "y=48-22
\n" ); document.write( "y = 26
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\n" ); document.write( "cows 22 numbers
\n" ); document.write( "hens 26 numbers
\n" ); document.write( "m.ananth@hotmail.ca
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