The two measurements involved for which ratio are taken in unit rate is always different. What is a unit. Unit Rate is the ratio of two measurements in which the second term is 1.
Unit rate is a rate in which the second term is 1.
For example Jake types 10 words in 5 seconds. The set of units U R of a ring forms a group under multiplication. Unit rate is a rate in which the second term is 1. 200 sausages were eaten by 50 people.