Question

shirts are 40% off. The original price of one shirt is $40. What is the total cost in dollars, of a shirt, at the sale price, including a 5% sales tax?

Answer 1

`\begin{gathered} \text{ Original price = \$40} \\ \text{Amount off = 40\% of \$40} \\ \text{Amount off = }(40)/(100)\text{ x \$40 = \$16} \\ \text{New price = Origina price - Amount off} \\ \text{New price = \$40 - \$16 = \$24} \end{gathered}`

Sales tax = 5%

Note that the sales tax is calculated on the New price and not on the original price

`\text{ Sales tax = }(5)/(100)\text{ x \$24 = \$1.2}`

Total cost = New price + sales tax

Total cost = $24 + $1.2 = $25.2

The answer is $25.2