Question 8
Four teams A, B, C and D take part in a game competition. Each match is between two teams. A win earns 3 points and a loss earns 0 points; in a draw, each team earns 1 point. All four teams play the same number of matches. The number of matches with a winner and a loser equals the number of drawn matches. The teams score 100 points altogether. Team A scores 42 points and loses no matches. How many matches does A win? Explain your reasoning.
