if you want to buy a shirt that costs 18.99 but you have 20% off coupon and the tax is 7% how much does the shirt actually costs?

20% off means you pay 80% of the price so you multiply by 0.8, and 7% tax means you multiply by 1.07

 

Resulting cost = 18.99*0.8*1.07 = 16.26

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