While watching a parade I saw some clowns and horses. I counted 30 legs and 10 heads. How many horses did I see in the parade?
Assuming that they have all the limbs they are supposed to have,
5.
If there are 5 horses and 10-5=5 clowns, there would be 20 horse legs and 10 clown legs. Adding these values and we get 30 legs in total.
+107 
