 
<translate> Ezinụlọ Andrew nwere mmadụ 1 + 2 + 2 = mmadụ 5. Onye ọ bụla n'ime ndị ezinụlọ Andrew na-eji 100 nkpuchi / 5 = 20 nkpuchi. Site na onye ọ bụla na-eyi ihe nkpuchi kwa ụbọchị anọ, ihe nkpuchi ahụ ga-adịgide 20 nkpuchi * ụbọchị 4 / nkpuchi = ụbọchị 80. Azịza ikpeazụ ya bụ: 80. <eng> Andrew's family consists of 1 + 2 + 2 = 5 people. Each of Andrew's family members uses 100 masks / 5 = 20 masks. With everyone wearing a mask every 4 days, the masks will last 20 masks * 4 days / mask = 80 days. The final answer: 80. 