Monday, May 24, 2010

How long is the Loch Ness monster? - a tribute to M.Gardner

The Loch Ness monster's length is 20 meters plus half of its length. What is his total length?

This puzzle is from the Martin Gardner's "Aha!" book.
Submit your answer on our Family Puzzle Marathon Be first to solve three puzzles and get a prize!


Jen said...

The Loch Ness monster is 40 meters long.

x= length of Loch Ness monster
x = 20 meters + x/2

x = 40

Maria said...

That is right! First puzzle point for Jen.
I think in the "Water Horse" movie it looked around 40 meters long.

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