Question

The sales tax in Delaware County, Ohio, is 7%. The total cost of purchasing a tennis racket, including tax, is $57.78. Find the cost of the tennis racket before sales tax.

Answer 1

Let x be the cost of the tennis racket before the sales tax

x + 7% of x = 57.78

x + 0.07x = 57.78

1.07x = 57.78

Divide both-side of the equation by 1.07

x = $54

Hence, the cost before the sales tax is $54