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'One and Three' printed from https://nrich.maths.org/
This problem stimulates students into creating some kind of diagram
as an aid to visualisation. Hopefully the phrase "ratio of the
speeds" will encourage students to think through how the simulation
is not significantly altered if the speeds of both boats were, for
example, doubled or halved. This is a useful problem for connecting
speed, distance and time, and may also offer students a useful
context in which to use algebra to express relationships containing
known and unknown quantities.