You have two ropes. You know that each rope takes one hour to burn from one end to the other, but that the burning does not take place at a constant rate (i.e. half the rope may burn in one minute, and the other half will take 59 more minutes to burn).

How would you go about measuring a 45 minute time interval with just these two ropes?

I struggled over this problem forever!!!!  That is an awesome solution!  The same can be applied to two candles as the problem I was trying to solve stated.  

Posted by jbcf05 on 2007-03-07 16:26:16