At the end of a circus act, there are 12 dogs on stage.  Half of the dogs are standing on their back legs and the other half are standing on all 4 legs.  How many dog paws are on the ground?
There are 12 dogs and half are standing on their back legs so that means 12/2 = 6 are standing on their back legs
A dog has 2 back legs and only 6 are standing on their back legs meaning that there are 2*6 = 12 paws on the ground
The other 6 dogs are standing on all 4 legs which means these 6 dogs have 6*4 = 24 paws on the ground
When you add them together 12+24 = 36 paws on the ground