Question 96242
A farmer has chickens and rabbits on his farm - There are 22 heads and 72 feet - how many chickens and how many rabbits are there 
Rabbits = X Chickens = Y 
Feet EQUATIOn: 4 X + 2Y = 72
Head EQUATIOn: x + y = 22
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Multiply thru Head equation to get:
-2 (x) + -2 (Y) = -44
Add to Feet equation to get:
2x = 28
x = 14 (# of rabbits)
y = 8  (# of chickens) 
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Cheers,
Stan H.