document.write( "Question 1174418: In a farm the number of chickens were 100% more than the cows. If there were 640 legs altogether how many chickens were there? \n" ); document.write( "

Algebra.Com's Answer #799868 by ikleyn(52802) $\"\"$ $\"About$

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document.write( "Let x be the number of cows.\r\n" );
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document.write( "Then the number of chickens is 2x, according to the condition.\r\n" );
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document.write( "Counting the legs, you have this equation\r\n" );
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document.write( "    4x + 2*(2x) = 640,   or\r\n" );
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document.write( "    4x + 4x = 640\r\n" );
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document.write( "      8x    = 640\r\n" );
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document.write( "       x    = 640/8 = 80.\r\n" );
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document.write( "ANSWER.  80 cows.\r\n" );
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