If each dog has 4 paws, 4 dogs together would have
If Calvin and Bonzo eat together,they can eat 480 hot dogs in 6 hours.Eating alone, Bonzo takes 16 hours longer than Calvin would to eat 480 hot dogs. How many hours does it take Calvin to eat 480 hot dogs?
A veterinarian surveys 26 of his patrons. He discovers that 14 have dogs, 10 have cats, and 5 have fish. Four have dogs and cats, 3 have dogs and fish, and one has a cat and fish. If no one has all three kinds of pets, how many patrons have none of these pets?