教我这道题,解释你怎么做出来In the finals of a special tug-of-war competit

教我这道题,解释你怎么做出来
In the finals of a special tug-of-war competition are three sets of well-trained and superbly conditioned athletes. They were matched in various competitions by a computer in order to create the best contests.
For the first round, four clowns completed as a team utilizing their well-developed arm muscles. They had proven themselves to be of equal strength to each other. On the other side of the rope were five neighborhood grandmas, a tugging team that had practiced together for many, many years and were also equal in strength to each other. The computer proved to be very accurate in this first round, because the result was a tie.
In the second round, one team was Evan, the specially trained tugging dog. Evan was pitted against a team made up of two grandmas and one clown. Again the tugging contest was a tie.
The final tug-of-war match is between these two teams: Evan and three grandmas on one side and the four clowns on the other side. Who will win this match?