2.2.1 Rates, Ratios, and Proportions (continued)

Example 2 Finding Unit Rates

A unit rate is a comparison of two quantities that have different units of measure, where the second quantity is 1 unit. The rates 10 miles per hour and 12 apples per bag are examples of unit rates. Note that in a unit rate, the 1 is typically implied, not written. For example, the unit rate 10 miles per hour is the same as 10 miles per 1 hour.

Example 3 Converting Rates

A conversion factor is a rate such as 12 in:1 ft, where the two quantities are equal but use different units. To convert a rate from one set of units to another, multiply by a conversion factor that will result in the desired units.

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