To find the unit price, divide the total cost by the weight. The first bag's unit price is approximately $1.93/kg, and the second bag's unit price is approximately $1.87/kg. The second bag is the better buy based on unit price.
Step-by-step explanation:
The student is asking how to calculate the unit price for two different bags of dog food and identify which is the better buy. To find the unit price, you divide the total price paid by the weight of the bag in kilograms. Here's how to calculate it step-by-step:
For the first bag: $12.24 / 6.35 kg = $1.928 (rounded to 3 decimal places), or about $1.93 per kilogram.
For the second bag: $13.99 / 7.48 kg = $1.869 (rounded to 3 decimal places), or about $1.87 per kilogram.
Based on the unit price, the second bag at $1.87 per kilogram is the better buy compared to the first bag at $1.93 per kilogram.