Question

Aura took three biology exams and has an average score of 87. Her second exam score was 8 points better than her first, and her third exam score was 2 points better then her second exam. What were her three exam scores?

Answer 1

81, 89, 91

Explanation:

You want to know Aura's three exam scores if their average was 87, the second was 8 point higher than the first, and the third was 2 points higher than the second.

Score

Let x represent the first exam score. Then x+8 and x+10 will be the other two scores. Their average is ...

(x +(x +8) +(x +10))/3 = 87

x +6 = 87 . . . . . . . . simplify

x = 81 . . . . . . . . subtract 6

x +8 = 89

x +10 = 91

Aura's three exam scores were 81, 89, and 91.

<95141404393>