This document defines ratio, rate, and unit rate. It provides examples of how to calculate unit rate when one number is equal to 1, and how to use unit rate to find total amounts. It also gives an example of how to find the unit rate of two packages and determine which is the better buy based on the unit rates.

1. Ratio, Rate & Unit Rate Rate or ratio – a comparison of two items Ex. The ratio of smiley-faces to hearts is: 2) Unit rate or cost – when one of the numbers equals 1 Ex. 2:1

2. Ex 1: Find the unit rate or unit price. A) B) = 25 mi/hour = $.60/can

3. Find the total amount using the unit rate. $5.25 per hour for 7 hours $6.32 per hour for 5 hours 5.25 x 7 = $36.75 6.32 x 5 = $31.60

4. Ex 2: Find the unit rate, then solve. A) A 2 lb. package of candy costs $3.98; a 3 lb. package costs $5.67. Which is a better buy? $1.89/lb. is cheaper than $1.99/lb., so the 3 lb. package is a better buy.