MathDB
"Trodgor" the Burninator

Source:

March 23, 2008
LaTeX

Problem Statement

Trodgor the dragon is burning down a village consisting of 90 90 cottages. At time t \equal{} 0 an angry peasant arises from each cottage, and every 8 8 minutes (480 480 seconds) thereafter another angry peasant spontaneously generates from each non-burned cottage. It takes Trodgor 5 5 seconds to either burn a peasant or to burn a cottage, but Trodgor cannot begin burning cottages until all the peasants around him have been burned. How many seconds does it take Trodgor to burn down the entire village?