What is the total cost if an item costing $30 is subject to a 10% sales tax?

What is the total cost if an item costing $30 is subject to a 10% sales tax?

• A. $33
• B. $32
• C. $31
• D. $30.50

Answer: (A)

To find the total cost of an item after applying a sales tax, you first need to calculate the amount of sales tax and then add it to the original price of the item. In this case, the item costs $30 and is subject to a 10% sales tax. To calculate the sales tax, you multiply the price by the sales tax rate: Sales Tax = Original Price × Sales Tax Rate Sales Tax = $30 × 0.10 = $3 Next, add the sales tax to the original price to find the total cost: Total Cost = Original Price + Sales Tax Total Cost = $30 + $3 = $33 Therefore, the total cost of the item after including the sales tax is $33. This demonstrates the proper method for calculating a total cost that includes sales tax, reinforcing the importance of percent calculations in real-life scenarios.

To find the total cost of an item after applying a sales tax, you first need to calculate the amount of sales tax and then add it to the original price of the item.

In this case, the item costs $30 and is subject to a 10% sales tax. To calculate the sales tax, you multiply the price by the sales tax rate:

Sales Tax = Original Price × Sales Tax Rate

Sales Tax = $30 × 0.10 = $3

Next, add the sales tax to the original price to find the total cost:

Total Cost = Original Price + Sales Tax

Total Cost = $30 + $3 = $33

Therefore, the total cost of the item after including the sales tax is $33. This demonstrates the proper method for calculating a total cost that includes sales tax, reinforcing the importance of percent calculations in real-life scenarios.