Slowpoison wrote: "According to my logic when A gives dog from his side to B then A is losing the price of dog." I think that is incorrect. The question says, when one of them gets extra goat, and to make them equivalent in terms of money, one has to give one dog besides the chicken he already has. So, it is 1 dog + 1 chicken = 1 goat What do you say, slowpoison? And, Republican, it's time to give the answer! :)