It is a unit rate.
Ratio
Ratio
The answer is a Unit Rate.<3
It is a rate with the second part being 1.
A unit fraction. The reciprocal of a unit ratio.
Miles are a unit of distance, and hours are a unit of time. You would need something to connect the two, such as speed (distance over time) to make any kind of comparison.
It is one of two possible forms of a unit rate.
for 1 of its kind
Meaning-1)The best in comparison! 2)Something set as an example for others to refer to.
something not very complicated.
There cannot be an exchange rate within a single country- it is a comparison of the currencies in two different countries. So if you are asking about the exchange rate between Estonia and the US, for example, the exchange rate is 1 dollar to about 12 Kroons, and .9 dollars to 1 Kroon. (The Kroon is the Estonian currency).
Rate means (1) value, (2) fixed price, (3) the ratio or amount of one thing compared to something else, as in the exchange rate of two currencies.