document.write( "Question 576102: in a farm there are two kinds of animals chicken and a pig. If the total of the head in 49 and the total feet is 100, how many are chicken and how many are pig? \n" ); document.write( "
Algebra.Com's Answer #369722 by solver91311(24713)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "In order for this to work, you have to assume that there are no two-headed chickens or three-legged pigs, or any other anomalies. In general and in real life, making such assumptions is not necessarily wise. But for the purposes of a 2X2 system word problem, it is probably ok.\r
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\n" ); document.write( "\n" ); document.write( "Chickens and pigs all have 1 head each, so if is the number of chickens and is the number of pigs, then:\r
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\n" ); document.write( "\n" ); document.write( "Chickens have 2 legs and pigs have 4 legs so:\r
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\n" ); document.write( "\n" ); document.write( "Solve the 2X2 system for and \r
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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