SOLUTION: A farmer has 60 cows, pigs, and horses. There are 4 times as many cows and pigs than they are horses. How many horses are there?

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Question 417564: A farmer has 60 cows, pigs, and horses. There are 4 times as many cows and pigs than they are horses. How many horses are there?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let a = number of horses
Let b = number of cows and pigs
given:
a+%2B+b+=+60
+b+=+4a+
-----------
+a+%2B+4a+=+60
5a+=+60
a+=+12
There are 12 horses