In calculating the average score, add the scores of each person and then divide it by the number of scores present. In this problem, Tony has forty seven points for five different quizzes. You are required to calculate for the average score of Tony. The formula is A = T/n, where A is the average score, T is the score, and n is the number of quizzes.
A = T/n
A = 47/5
A = 9.4
Therefore, Tony has an average of 9.4 points in five different quizzes.