Charlie paid $15.48 for a 7.48 - bag of dog food. A few weeks later, he paid $16.58 for a 7.94-kg bag at a different store.

Question

Charlie paid $15.48 for a 7.48 - bag of dog food. A few weeks later, he paid $16.58 for a 7.94-kg bag at a different store.

Find the unit price for each bag. Then state which bag is the better buy based on the unit price.

Round your answers to the nearest cent.

Answer 1

To find the unit price, we divide the cost by the weight of each bag:

For the first bag:
Unit price = 15.48 ÷ 7.48 = $2.07 per kilogram

For the second bag:
Unit price = 16.58 ÷ 7.94 = $2.09 per kilogram

Based on the unit price, the first bag is the better buy as it is cheaper per kilogram.