To determine the sale price of an individual pen, follow these steps:

1. The original price of the eight-pack of pens is $12.00.
2. The discount is $\frac{1}{3}$ off the original price.

First, calculate the amount discounted:

$\text{Discount amount} = \frac{1}{3} \times 12 = 4$

Now, subtract the discount from the original price to find the sale price of the eight-pack:

$\text{Sale price of the pack} = 12 - 4 = 8$

Next, calculate the sale price of an individual pen. Since there are 8 pens in the pack, divide the sale price of the pack by 8:

$\text{Sale price of an individual pen} = \frac{8}{8} = 1$

Therefore, the sale price of an individual pen is $1.00.

Would you like more details or have any questions?

Here are 5 related questions:

1. What would the discount be if the pack was 50% off instead?
2. How much would two packs of pens cost at the sale price?
3. What is the percentage savings per pen compared to the original price?
4. If a different store sold a pack for $10.00, which store offers a better deal after the sale?
5. How would the price change if only 1/4 off was applied instead?

Tip: Always confirm the total number of items in a package when calculating the price per item.