Final answer:
After calculating the unit prices, Brand A at $0.274 per pencil is cheaper than Brand B at $0.374 per pencil, making Brand A the better choice.
Step-by-step explanation:
The unit price of an item indicates the cost per unit of that item. To calculate the unit price for each brand mentioned in the question, we divide the total price by the number of units in each pack. For Brand A's pack of pencils, the unit price is calculated as follows: $3.29 divided by 12 pencils, which equals approximately $0.274 per pencil.
For Brand B, the calculation is $8.99 divided by 24 pencils, resulting in approximately $0.374 per pencil. Once the unit prices are calculated, we can compare them to determine which brand offers the more economical option.
Brand A offers a unit price of $0.274 per pencil, while Brand B offers a unit price of $0.374 per pencil. Therefore, Brand A is the better choice economically as it has a lower unit price.