Question

How much will you spend to buy a backpack for $35.00 if sales tax is 3.8%?

Answer 1

Given data:

The original cost is C=$35.

The sales tax is s=3.8%.

The final cost after sales tax is,

`\begin{gathered} F=C(1+s) \\ =35(1+(3.8)/(100)) \\ =35(1.038) \\ =36.33 \end{gathered}`

Thus, the final cost after the sales tax is $36.33.