1. **State the problem:** We want to find the cost in cents of $p$ pencils if $k$ pencils cost $c$ cents. 2. **Formula and explanation:** The cost per pencil is the total cost divided by the number of pencils, so cost per pencil = $\frac{c}{k}$ cents. 3. **Calculate the cost for $p$ pencils:** Multiply the cost per pencil by $p$ to get the total cost for $p$ pencils: $$\text{Cost for } p \text{ pencils} = p \times \frac{c}{k} = \frac{pc}{k}$$ 4. **Interpretation:** This means if $k$ pencils cost $c$ cents, then $p$ pencils cost $\frac{pc}{k}$ cents. **Final answer:** The cost in cents of $p$ pencils is $$\frac{pc}{k}$$.