rope puzzle interview question | Two ropes burning riddle 45 minutes | Solution

You have two ropes and a lighter. Each rope has the following property: If you light one end of the rope, it will take one hour to burn to the other end. They don't necessarily burn at a uniform rate. How can you measure a period of 45 minutes?


Ans:
Light up three out of four ends of the two wires. Once one wire is completely burnt, light up the fourth end. At 45 minutes, both wires are burnt completely.