A vampire drains three people a week. His best friend is a werewolf who eats five people a week, but only fresh ones, never drained ones. How many weeks will a village of 72 people last them both?
The vampire and werewolf need 3 + 5 = <<3+5=8>>8 people a week.
A village of 72 people will last them both 72 / 8 = <<72/8=9>>9 weeks.
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