Question

Jeremiah needed dog food for his new puppy. He compared the prices and sizes of three types of dog food.

Canine Cakes Bark Bits Woofy Waffles
Size (pounds) 30 40 28
Cost $54 $70 $42


Part A: Calculate the corresponding unit rate for each package. (9 points)

Part B: Determine the best buy using the unit rates found in Part A. Explain your answer. (3 points)

Answer 1

The unit rates for Canine Cakes, Bark Bits, and Woofy Waffles are $1.80, $1.75, and $1.50 per pound respectively. The best buy is Woofy Waffles with the lowest unit rate of $1.50 per pound, making it the most cost-effective option for Jeremiah.

Step-by-step explanation:

Part A of the question asks us to calculate the unit rate for each package of dog food. The unit rate is found by dividing the cost of the package by the number of pounds in that package.

• Canine Cakes - $54 for 30 pounds: Unit rate = $54 ÷ 30 = $1.80 per pound
• Bark Bits - $70 for 40 pounds: Unit rate = $70 ÷ 40 = $1.75 per pound
• Woofy Waffles - $42 for 28 pounds: Unit rate = $42 ÷ 28 = $1.50 per pound

Part B requires us to determine the best buy using the unit rates found in Part A. The best buy will be the dog food with the lowest cost per pound. In this case, Woofy Waffles has the lowest unit rate of $1.50 per pound, making it the best buy.