http://www.mensa.org.uk/prizepuzzle

Answers are:  Marconi/Minorca

Winner of previous Mensa Prize Puzzle draw was S. Darnbrough, from Wrexham,
UK. The correct answer was; one minute and 13.125 seconds.   This was the
train passing through a tunnel question.  I know a number of us got to one
minute and 13 seconds - looks like we were wrong by 0.125 of a sec!!

Dave