The Anonymous Widower

Bad Mathematics on the Underground

When the London Underground replaces or refurbishes an escalator, they put posters on them to amuse and inform.  One says.

Twice the life. Escalators are refurbished at least twice in their lifetime.

Here’s a picture of the error, that I took later.

Bad Mathematics on the Underground

If the refurbishments make the escalator as new, surely two will treble the total lifetime.

March 17, 2012 - Posted by AnonW | Transport | Engineering, London Underground, Maths