Hard
IQ Puzzle Riddles
11 XP

The Two Ropes Clock

24,411 solved 49% solve rate 51% fail rate
Two ropes each burn in 60 minutes (non-uniformly). How do you measure 45 minutes?
Only 49% solve this correctly
24,411 attempts
Earn +11 XP for solving
Quick Answer & Explanation
Light rope A from

The answer to this riddle is Light rope A from. Difficulty: Hard · Solved by 24,411 puzzle lovers.

Light rope A from both ends and rope B from one end. When A finishes (30 min), light other end of B. When B finishes: 45 minutes.
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