Sheet # 61 Critical Thinking

Name: _____________________ Date_____________

Derek was in Math Club, and as a result his regular math exam scores were improving each week by 5 points from the previous exam. He took 5 exams and his average score was 85. What was his score on each of the five tests?

Answer for sheet # 61

n is the score in the first week

n +5 is the score in the 2nd week

n + 10 in the 3rd week

n + 15 in the 4th week

n + 20 in the 5th week

total score: 5n + 50

Average score = (5n + 50)/5 = 85

n +10 = 85

n = 75 (score in the first week)

80 in the 2nd week, 85 in the 3rd week, 90 in the 4th week, 95 in the 5th week.

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