Felipe bought 4 CDs that were each the same price. Including sales tax, he paid a total of \( \$ 64.40 \). Of that total, \( \$ 3.60 \) was tax. What was the price of each CD before tax?

To find the price of each CD before tax, first, we need to determine how much Felipe paid for the CDs before tax. We do this by subtracting the sales tax from the total amount he paid: \[ \text{Total before tax} = \text{Total paid} - \text{Sales tax} = 64.40 - 3.60 = 60.80. \] Now that we know he spent \( \$ 60.80 \) on the CDs, we can find the price of each CD by dividing the total by the number of CDs: \[ \text{Price per CD} = \frac{\text{Total before tax}}{\text{Number of CDs}} = \frac{60.80}{4} = 15.20. \] Thus, the price of each CD before tax was \( \$ 15.20 \).