Question

The sales tax in the town where Amanda lives is 7%. Amanda paid $21 in sales tax on a new stereo. What was the price of the stereo?

Answer 1

The price of the stereo is $300

Explanation:

we know that

The sales tax in decimal form multiplied by the price of the stereo must be equal to $21

Let

x -----> the price of the stereo

`Sales\ tax=7\%=7/100=0.07` -----> decimal form

so

The linear equation that represent this situation is

`0.07x=21`

Solve for x

Divide by 0.07 both sides

`0.07x=21`

`x=\$300`