Hi,

A farmhouse shelters 10 animals. Some are pigs some are ducks,

 Altogether there are 36 legs. How many of each animal are there?

 Let x be the number of pigs and (10-x) be the number of ducks.

  4x + 2(10-x) = 36 legs

  4x + 20 - 2x = 36

       2x = 16

        x =  8, the number of pigs,  2 is the number of ducks  

Checking our Answer:

 4*8 + 2*2 = 36  checks.      

Wish You the Best in your Studies.

 

Answer by ikleyn(52855)   (Show Source): You can put this solution on YOUR website!
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