24*.75=$18 + 8.25%tax = 18*1.0825 = $ 19.485
24 x 0.25 = 6
24 - 6 = 18
The tax rate is after the discount, and so:
18 x 0.0825 = 1.485
18 + 1.485 = 19.485
~$19.49 is your answer
hope this helps
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