SOLUTION: Farmer Brown had ducks and cows. one day she noticed that the animals had a total of 15 heads and 48 feet. how many cows does Brown have?

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Question 1084759: Farmer Brown had ducks and cows. one day she noticed that the animals had a total of 15 heads and 48 feet. how many cows does Brown have?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
c cows
d ducks

system%28c%2Bd=15%2C4c%2B2d=48%29

9 cows
6 ducks