A guitar that normally cost n dollars is on sale for 20% off. The tax is 8%. What is the total cost

A guitar that normally cost n dollars is on sale for 20% off. The tax is 8%. What is the total cost of the guitar including tax?

Discount Amount = 0.2n
Total paid after discount = n - 0.2n = 0.8n

Tax amount:
0.8n * 0.08 = 0.064n

After tax amount:
0.8n + 0.64n = 0.864n