if any length rope takes 1 hour to burn completely then how does one measure 45 minutes by burning rope?

It depends on the length of the one hour rope. Whatever is 75% of that is how to measure 45 minutes.

  • Answer provided by kgb agent Evangeline on 2024-06-09 11:56:27
  • Source: http://sbjoshi.wordpress.com/2008/06/04/puzzle-burning-ropes/

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