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Fuse on fire solution?

There is no solution posted for the Fuse of Fire question. Is the answer:

Burn one string from both ends. The string will burn off completely in 15 secs (since u r burning it from both ends). The moment this happens, place the other string which will take 30secs to burn. In total, you have 15 + 30 = 45 secs.

Is this the solution?

Thanks,
Prashant

Prashant
Monday, January 14, 2002

I remember there being a solution posted, but it's not there anymore.

I would've thought the mad bomber could burn one of the fuses for 15 seconds in his lab, then put it out and attach the unburned section to the second.

Paul Brinkley
Monday, January 14, 2002

The correct way would be to fold one of the string (say string No 1) in such a way that the two ends meet. Then attach/join this to the other string. Now light string No 2. String No 2 takes 30 seconds to burn. Since String No 1 is attached to the other end of string 1, it will light up at the end of 30 seconds and burn for 15 seconds. Thus the mad bomber has a fuse which will burn for exactly 45 seconds

Roshan
Monday, July 26, 2004

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