ass1  = mark for assignment 1   (out of 10)
ass2  = mark for assignment 2   (out of 15)
mid   = mark for mid-term exam  (out of 15)
final = mark for final exam     (out of 60)

if (mid+final >= 38)
   total = ass1 + ass2 + mid + final
else
   total = (mid+final) / 0.75;