Final answer:
A single bar of soap costs $2.
Step-by-step explanation:
To find the cost of a single bar of soap, you need to divide the total cost of the pack of six bars by the number of bars in the pack. In this case, the pack costs $12 and contains six bars. So, to find the cost of a single bar, you divide $12 by 6.
$12 divided by 6 equals $2.
Therefore, a single bar of soap costs $2.