1. 3 buddies share 2 crackers evenly, 2/3 because you have 3 buddies and two crackers, meaning not everyone is going to get 1 cracker, so it is 2/3
2. 9 puppies and 4 liters of milk, 4/9, because there are 9 puppies and 4 liters of milk, so like the last one, not everyone will get one so it would be 4/9
3. 4 friends and 3 chocolate bars, 3/4, because if they each get 1/4 of each bar, 1/4 x 3 = 3/4 bars per person
4. Same as #1
