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?
An Average Average Speed
Stage: 4 Challenge Level:
Does it matter how far Cardiff is from Cambridge ?
Will the overall average speed change if it was twice as far ?
Half as far ? 100 miles ? One mile ?
Here's another thought : 60 miles per hour (mph) is how many
hours per mile (hpm) ?
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. More information on many of our other activities
can be found here.