SOLUTION: A particular farm has cows and ducks. There are a total of 79 heads and 212 legs. How many cows are there and how many ducks are there?

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Question 393447: A particular farm has cows and ducks. There are a total of 79 heads and 212 legs. How many cows are there and how many ducks are there?
Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let c=number of cows and d=number of ducks.
4c+2d=212
c+d=79
c=79-d
4(79-d)+2d=212
316-4d+2d=212
-2d=-104
d=52
c=27
.
Ed