Question 816737
  <pre><font face = "Tohoma" size = 3 color = "indigo"><b> 
Hi,
Her second exam score was 7 points better than her first, 
and her third exam score was 1 points better than her second exam.
1st Exam  x           
2nd Exam  x +7        
3rd Exam  x + 8       
average score of 87:  Total points for the 3 exams = 261
  x + (x+7) + (x+8) = 261    |Solve for x
           3x = 246
            x = 82
1st Exam  x           82
2nd Exam  x +7        89
3rd Exam  x + 8       90
CHECKING our answer***
{{{(82 + 89 + 90)/3 = 87}}}