To determine the cost of a single pencil, we can take the total cost and divide it by the quantity for any of the given options.
Let's calculate it for the first option:
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For 48 pencils at a cost of $12.00: \[ \text{Cost per pencil} = \frac{\text{Total cost}}{\text{Quantity}} = \frac{12.00}{48} = 0.25 \]
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Checking the other options:
- For 24 pencils at a cost of $6.00: \[ \frac{6.00}{24} = 0.25 \]
- For 12 pencils at a cost of $3.00: \[ \frac{3.00}{12} = 0.25 \]
- For 6 pencils at a cost of $1.50: \[ \frac{1.50}{6} = 0.25 \]
In every case, the cost per pencil is $0.25.
Therefore, the correct response is: $0.25