Posted by **taylor** on Tuesday, August 8, 2006 at 5:50pm.

farmer joe needs cows pigs an chickens

cows cost 10.00 each and pigs cost .50 cents each,an chickens are 10 cents.he needs 100 animals an he only has 100 dollars .

let x=cow, y=pig, and z=chicken

10x + .5y +.1z = 100

x + y + z = 100

substitute & get the answer.

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