Given that John's bowling scores were 120, 144, 143, 111 and 167, find his average score. (The rule for calculating the average of a set of scores is: Average Score = Sum of Scores/Number of Scores.)

Rule for calculating the average of a set of scores is:

Average Score = Sum of Scores/Number of Scores

Sum of scores = 120 + 144 + 143 + 111 + 167 = 685

Number of scores = 5

Average Score = 685/5 = 137

Thus his average score is 137.