Final answer:
To find the price of each CD before tax, subtract the total sales tax from the total paid and then divide by the number of CDs. Mary's CDs cost $16.30 each before tax.
Step-by-step explanation:
Calculating the Price Before Tax
The question involves calculation of the price of an item before tax was added, which is a common mathematical problem involving basic arithmetic operations and an understanding of percentages and sales tax calculation. Since Mary bought 3 CDs at the same price and paid a total of $52.50, including a $3.60 tax, we can determine the price before tax as follows:
- Subtract the total sales tax from the total paid to find the total cost before tax: $52.50 - $3.60 = $48.90.
- Divide the total cost before tax by the number of CDs to find the price per CD before tax: $48.90 / 3 = $16.30 per CD.
Therefore, the price of each CD before tax was $16.30.