1. Unit Rates and Proportional Reasoning
COURSE 2 LESSON 5-2
Use the unit price to find the total price: 7 yd of ribbon at $.39 per yard.
= $ unit price • number of units = total price
$.39 • 7
The total price of 7 yd of ribbon is $2.73.
5-2

2. Unit Rates and Proportional Reasoning
COURSE 2 LESSON 5-2
Find each unit price. Then determine the better buy.
3 lb of potatoes for $.89
5 lb of potatoes for $1.59
Divide to find the unit price of each size.
price
number of lb
$.30/lb
$.89 3
price
number of lb
$.32/lb
$1.59 5
Since $.30 < $.32, 3 lb of potatoes for $.89 is the better buy.
5-2

3. Unit Rates and Proportional Reasoning
COURSE 2 LESSON 5-2
1. It took Anthony 5 h 45 min to complete a 25-mi walkathon. What was his average speed in miles per hour? Round your answer to the nearest hundredth.
2. A 20-lb bag of dog food costs $ A 30-lb bag of the same dog food costs $ Find each unit price. Then determine the better buy.
4.35 mi/h
$1.08/lb; $1.10/lb; 20 lb for $21.50.
5-2