1.
All passing students: 31
3rd period passing students: 12
12/31= .3870*100= 38.70% , if rounded to whole number, 39%.
Answer: 39%.
2.
2nd period students: 15
Failed students in 2nd period: 8,
8/15= .5333*100= 53.33, if rounded to whole number, it is 53%.
Answer: 53%