Ahhh, it's a half-life kind of thing; 60, 30, 15.


>1. Light the first fuse from the both ends and the second from one end.
>2. When the first one burns out, light the second end of the second fuse.
>It'll burn for 15 mins.
>
>>I've given this puzzle before but I figured why not.
>>
>>1. There are two fuses of any length.
>>2. Each fuse burns exactly 1 hour.
>>3. The fuses do not burn evenly. For example 1/10 of the fuse could take 1/2 an hour and the remaining 9/10ths could take 1/2 an hour.
>>
>>4. You must, using both fuses, come up with a way to find a 15 minute interval.
>>
>>( obviously there are no clocks of any kind )