A rate is a comparison of two quantities that have different units. A rate is written as a fraction.
A rate is in simplest form when the numbers that form the rate have no common factors. Note that the units are written as part of the rate.
Example: Amanda read 210 pages of text in 4 hours
A unit rate is a rate in which the number in the denominator is 1.
To find unit rates, divide the number in the numerator of the rate by the number in the denominator of the rate.
Example: One pound of chickpeas costs $4.85