Final answer:
Both Alberto and Beth are correct but focus on different ratios. Alberto calculates the cost per pound, while Beth calculates the pounds per dollar. They've simply interpreted the same price information in two valid ways.
Step-by-step explanation:
The scenario presents a price ratio issue, where the grocery store sells beans at a rate of 5 pounds for $4. Alberto and Beth are interpreting this ratio in different ways. Alberto's perspective is that for every 4 dollars spent, you get 5 pounds of beans. He calculates the cost per pound by dividing the total cost by the number of pounds ($4/5 pounds), which results in $0.80 per pound. On the other hand, Beth's interpretation is that for every 5 pounds of beans you get, you spend 4 dollars.
She then calculates the pounds per dollar by dividing the total pounds by the cost (5 pounds/$4), which gives 1.25 pounds per dollar.
Both Alberto and Beth are correct in their assessments, as they are simply looking at the same ratio from two different perspectives. They have correctly calculated the unit rate for each scenario.
Alberto's $0.80 per pound reflects the price each pound of beans will cost, while Beth's 1.25 pounds per dollar reflects how many pounds of beans one receives for every dollar spent.
The provided information about fish prices, yogurt options, and Bass Ale prices in the other examples are distinct cases demonstrating calculations of cost per unit, conversions, and impact of exchange rates on prices and do not directly relate to this particular question about the beans.