1. "Legs?" said Nancy. "Was the bus crowded, then?" "Not really, but it seemed all legs," Les replied. "Some guys had dogs, and there were as many dog legs as one more than seven times the number of us passengers. Then our own human legs totalled one more than the number of dogs on the bus." How many dogs?

7 dogs, 4 humans

9 dogs, 5 humans

13 dogs, 7 humans