Solution:
Jake has the biggest dog and we can infer from the given clues that the biggest dog is supposed to be the fastest.
Ruby’s dog is bigger than Jim’s dog, but is smaller than Jake’s dog. Pam’s dog is the same size as Tony’s dog, which is bigger than Jim’s dog, but smaller than Ruby’s.
If bigger dogs are faster, which of the following lists the fastest dog?
Jake has the biggest dog and we can infer from the given clues that the biggest dog is supposed to be the fastest.