Amazon delivered three packages for Kaileys birthday. The first package weighed 6 pounds 4 oz. The second package weighed 9 pounds 2 ounces. The third package weighed 7 pounds 8 oz. What is the difference between the heaviest and the lightest packages in pounds and ounces?

1. Convert the weights to pounds and ounces: - First package: \(6\) pounds \(4\) ounces. - Second package (heaviest): \(9\) pounds \(2\) ounces. - Third package: \(7\) pounds \(8\) ounces. 2. Identify the heaviest and lightest packages: - Heaviest package: \(9\) pounds \(2\) ounces. - Lightest package: \(6\) pounds \(4\) ounces. 3. To find the difference, subtract the weight of the lightest package from the heaviest package: \[ (9 \text{ lb } 2 \text{ oz}) - (6 \text{ lb } 4 \text{ oz}) \] 4. Subtract the pounds and the ounces separately. Start with the ounces: - Subtract the ounces: \(2 \text{ oz} - 4 \text{ oz}\). Since \(2\) is less than \(4\), we need to borrow \(1\) pound (which is \(16\) ounces). 5. After borrowing: - Reduce the pounds: \(9 - 1 = 8\) pounds. - Increase the ounces: \(2 + 16 = 18\) ounces. - Now the subtraction is: \[ (8 \text{ lb } 18 \text{ oz}) - (6 \text{ lb } 4 \text{ oz}) \] 6. Subtract the ounces: \[ 18 \text{ oz} - 4 \text{ oz} = 14 \text{ oz} \] 7. Subtract the pounds: \[ 8 \text{ lb} - 6 \text{ lb} = 2 \text{ lb} \] 8. Combine the results: \[ \text{Difference} = 2 \text{ pounds } 14 \text{ ounces} \]