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Penelope has a loyalty card good for a discount at her local grocery store. The item she wants to buy is priced at $21, before discount and tax. After the discount, and before tax, the price is $17.22. Find the percent discount.

Respuesta :

17.22 X
——— = ——
21 100

17.22 x 100 = 1722

1722 / 21 = 82

100 - 82 = 18%

21 x .18 = 3.78

21 - 3.78 = 17.22

Answer is 18%

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