Ozzie has a coupon for 5% off any purchase in his favorite bakery. When Ozzie stops to buy some cookies, he discovers that all cookies are on sale for 15% off the regular price. The cookies are regularly $5.89 per dozen. If Ozzie uses his coupon and pays 7% sales tax, how much does he pay for two dozen cookies?

Ozzie is buying two dozen cookies at 5.89 each, so we multiple 5.89 times two, which come to 11.78. Fifteen percent off all cookie and he has a five percent coupon, which would equal a total of 20% off. So, we multiply 11.78x. 20 and get, 2.35. Subtract 2.35 from 11.78 and get 9.43. Now sales tax is added to the 9.43, so we multiply by. 07 and get. 66. We add it to the sale price and get 10.09.