At Holborn underground station there is a very long escalator. Two
people are in a hurry and so climb the escalator as it is moving
upwards, thus adding their speed to that of the moving steps. ...
How many steps are there on the escalator?
Four on the Road
Age 14 to 16 Challenge Level
Well done to Thomas from Woodland Middle
School, and Rayan from St James School, who each sent us graphs
which show all the pieces of information.
These aren't the only graphs which solve
the problem, so why not try drawing some more and looking at the
similarities and differences between them?
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the
NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to
embed rich mathematical tasks into everyday classroom practice.