conversations.from: human
conversations.value: Out of the 80 students who took the biology exam, only 2/5 of them managed to score 100%. If a score below 80% qualified as failing, and 50 percent of the remaining students who didn't score 100% managed to score over 80%, calculate the number of students who failed the exam.
conversations.from: assistant
conversations.value: The number of students who scored 100% is 2/5*80 = 32
  Out of the 80 students, 80-32 = 48 did not score 100%.
  If 50% of the students who did not score 100% managed to score over 80%, then 50/100*48 =24 students scored over 80%
  The number of students who failed is 48-24 = 24