Thirty-six of the staff of 80 teachers at a local intermediate school are certified in Cardio- Pulmonary Resuscitation (CPR).In 180 days of school, about how many days can we expect that the teacher on bus duty will likely be certified in CPR? October 4, 2022 by 8i9x6 5 days 45 days 65 days 81 days See Answer 81 days