Respuesta :

20 * .10 = 2  (2 = 10% of 20)

20 + 2 = 22

20 x .07 = 1.4  (1.4 = 7% of 20)

20 + 1.4 = 21.4

The price of a 20$ haircut with a 10% tax would be $22.

The price of a 20$ haircut with a 7% tax would be $21.40.