total tax : $12.24
total cost of the drone after tax :$154.23
Explanation
Step 1
a) let
[tex]tax=8.625\text{ \%}[/tex]
b) now, to find the value of the tax, use the formula
[tex]value\text{ =}\frac{totalcost*rate}{100}[/tex]
so,replacing
[tex]\begin{gathered} value\text{ =}\frac{141.99*8.625}{100} \\ value\text{ =12.24} \end{gathered}[/tex]
so, total tax : $12.24
Step 2
b)total cost after tax
to find the total cost just add the total tax to the cost before taxes, so
[tex]cost\text{ after taxes= cost befores taxes+taxes}[/tex]
replace
[tex]total\text{ cost of drone= 141.99+12.24=154.23}[/tex]
therefore
total cost of the drone after tax :$154.23
I hope this helps you
