Tuesday, November 13, 2007

A puzzler

Just to get you thinking...

You are given two ropes. You are told that it takes 60 minutes from each rope to burn from one end to the other. However, the ropes are neither identical nor uniform - it may take 45 minutes for the rope to burn 1/10th of the length, and 15 minutes for the other 9/10.

How can you time 45 minutes?

1 Comment:

Anonymous said...

With a clock or watch?
hee-hee, mom