- Identify the base cost at Store B: \(\$1,350\).
- Identify the sales tax rate at Store B: \(7\%\) or \(0.07\).
- Multiply the base cost by the tax rate: \(\$1,350 \times 0.07 = \boxed{\$94.50}\).
Explanation
- Identifying Data and Problem Parameters
To determine the amount of sales tax charged at Store B, we first identify the base cost and the applicable sales tax rate from the provided data. The base cost for the computer repair at Store B is \(\$1,350\), and the corresponding sales tax rate is \(7\%\).
- Converting the Tax Rate to a Decimal
The sales tax is calculated as a percentage of the base price. To find the dollar amount, we convert the percentage into a decimal by dividing by 100:
\[7\% = \frac{7}{100} = 0.07\]
- Calculating the Sales Tax Amount
We now multiply the base cost of the computer repair by the decimal tax rate to find the total sales tax amount:
\[\text{Sales Tax} = \$1,350 \times 0.07\]
Performing the multiplication:
\[1350 \times 0.07 = 94.5\]
Therefore, the sales tax charged is \(\$94.50\).
Examples
Understanding how to calculate sales tax is a fundamental skill for everyday life. For example, whenever you go shopping, you need to know how much tax will be added to the price of an item to estimate the final cost at the register. By converting the tax percentage into a decimal and multiplying it by the sticker price, you can accurately plan your budget and ensure you have enough money for your purchase.