Andrew's father buys a package of 100 masks. Andrew lives with his 2 parents and 2 siblings. All members of Andrew's family change masks every 4 days. How many days will it take to finish the pack of masks? Let's think step by step and output the final answer after "####".
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Andrew's family consists of 1 + 2 + 2 = <<1+2+2=5>>5 people.
Each of Andrew's family members uses 100 masks / 5 = <<100/5=20>>20 masks.
With everyone wearing a mask every 4 days, the masks will last 20 masks * 4 days/mask = <<20*4=80>>80 days.
#### 80
Andrew's father buys a package of 100 masks. Andrew lives with his 2 parents and 2 siblings. All members of Andrew's family change masks every 4 days. How many days will it take to finish the pack of masks?
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