ngmasuku6394 ngmasuku6394 24-01-2024 Health contestada A patient reports smoking a pack of cigarettes a day for 9 years. He then quit for 2 years, and then smoked 2 packs a day for the last 30 years. What are the pack-years for this patient? 1) 19.5 years 2) 39 years 3) 41 years 4) 69 years