Drake buys 45 packets of food for his pets. If he feeds 30 pets with 5 packets of food, how many pets does Drake have?
Abhishek has 45 marbles with him. He bought 5 packets of 24 marbles each. How many marbles does Abhishek have now?
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?