Compare "Unit Rates" with "Ratios" ?
A unit rate is the value of 1 entity
A ratio is the relative proportion of 2 entities
Consider n units of some commodity costs $x
We could say that the "unit cost" of the commodity is $
NB: The concept of unit rate need not apply to cost but rather any measure of unit volume of the entity.
Consider a ratio
If we are told that
As an example, consider
Hope this helps!