How do unit rates relate to ratios?

Answer:
A unit rate is one in which the second number of the ratio is 1 - in some suitable units.
For example, 10 kilometres in 30 minutes can be converted to a unit rate as
20 kilometres per hour or 1/3 km per minute (or however many km per year, etc).
First answer by Mehtamatics. Last edit by Mehtamatics. Contributor trust: 609 [recommend contributor recommended]. Question popularity: 1 [recommend question].