The following gives a translation from numeric scores to letter grades. Note that all assignments count equally towards the final grade, and that it is the scaled numeric scores (rather than the letter grades) that are averaged.

Assignment 1: A >=30
(41) B >=21
  C >=14
Assignment 2: A >=31
(39) B >=24
  C >=16
     
Assignment 3: A >=30
(37) B >=23
  C >=16
     
Assignment 4: A >=35
(43)  B >=27
  C >=19
     
Exam 1: A >=64
(85) B >=49
  C >=33
     
Assignment 5: A >=38
(48) B >=29
  C >=20
 
Assignment 6:  A >=35
(44) B >=26
  C >=17
 
Assignment 7: A >=42
(52) B >=32
  C >=22
Exam 2: A >=65
(95) B >=50
C >=35
 
Assignment 8: A >=52
(65) B >=39
  C >=26
 
Assignment 9: A >=43
(54) B >=32
C >=21