Finding Unit Rate Using a Conversion Ratio

The video tutorial explains how to calculate the unit rate cost per ounce of a watermelon. It begins by presenting a problem where a 12-pound watermelon costs $5.76, and the task is to find the cost per ounce. The tutorial guides viewers through the process of converting pounds to ounces using a conversion ratio, calculating the cost per pound, and then converting that to cost per ounce. The solution is demonstrated step-by-step, emphasizing the importance of understanding conversion ratios and avoiding common pitfalls. The final cost per ounce is determined to be $0.03.

What is the initial weight of the watermelon in pounds?

• 12 pounds

• 10 pounds

• 15 pounds

• 20 pounds

How many ounces are there in one pound?

• 20 ounces

• 16 ounces

• 12 ounces

• 8 ounces

What is the cost per pound of the watermelon?

• $0.36

• $0.42

• $0.48

• $0.54

What is the cost per ounce of the watermelon?

• $0.05

• $0.04

• $0.03

• $0.02

Which answer choice corresponds to the cost per ounce?

• Choice C

• Choice B

• Choice A

• Choice D