Question

Taronne received his cell phone bill in the mail. The bill was for $99.00 and the sales tax was 4.5%. How much was he charged in taxes?

Answer 1

Let the origin bill without tax is $x.

He was charged $ x*$\dfrac{4.5}{100}$ in tax.

Therefore x+x*$\dfrac{4.5}{100}=99$

$\Rightarrow x=94.73$

He was charged in taxes=(94.73 *$\dfrac{4.5}{100})= 4.26$ in dollars