SOLUTION: old Mcdonald has 15 goats and chickens on his farm. the animals combined have a total of 34 legs. assuming there are no physical defects, how many of each animals are on the farm

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: old Mcdonald has 15 goats and chickens on his farm. the animals combined have a total of 34 legs. assuming there are no physical defects, how many of each animals are on the farm      Log On


   

Question 539251: old Mcdonald has 15 goats and chickens on his farm. the animals combined have a total of 34 legs. assuming there are no physical defects, how many of each animals are on the farm
Answer by AnlytcPhil(1806) About Me  (Show Source):
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old Mcdonald has 15 goats and chickens on his farm. the animals combined have a total of 34 legs. assuming there are no physical defects, how many of each animals are on the farm
34 legs amounts to 17 pairs of legs.  All 15 animals have a pair of front legs,
so the extra 2 pairs of legs are hind legs so they belong to 2 goats.  So there
are 2 goats and 13 chickens. 

Edwin