An example of a unit rate is miles per hour, which is a measure of speed indicating how many miles are travelled in a single hour. Unit rates are ratios in which a number of units of one type correspond to a single unit of another type.
Another commonly encountered type of unit rate is the unit price. This is a measure of the number of dollars spent per unit of measurement for a particular product. For instance, if a customer pays $1.70 for a 20-ounce bottle of soda, the unit price would be 8.5 cents per ounce. However, if a customer pays 99 cents for a 2-liter bottle of soda containing 67 ounces, the unit price would be only 1.4 cents per ounce.