SOLUTION: a farmhouse shelters 10 animals. some are pigs and some are ducks. altogether there are 36 legs. how many of each animal are there?

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Question 1105020: a farmhouse shelters 10 animals. some are pigs and some are ducks. altogether there are 36 legs. how many of each animal are there?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
x pigs
10-x ducks
x*4+(10-x)*2=36
4x+20-2x=36
2x=16
x=8
8 pigs and 2 ducks.