Trace: • sticks
wiki:donuts:fall2014:answers:sticks
Answer
Light one stick at both ends and light the other stick at one end. When one stick finishes burning, 30 min will have passed. Light the other end of the other stick. When this stick finishes burning, 15 more min will have passed.
wiki/donuts/fall2014/answers/sticks.txt · Last modified: 2014/12/16 11:41 by jmb438