Answer:
Customer will save 8.3%.
Step-by-step explanation:
Let the amount of bill paid by the customers = $x
Local tourism tax = 9%
Total amount of bill including local taxes
= (x + 9% of x)
= x + 0.09x
= 1.09x
If Lucy decides to pay the tax portion of the bill = 0.09x
Then percentage saving by the customer = [tex]\frac{\text{Taxes on bill}}{\text{Bill amount including tax}}\times 100[/tex]
= [tex]\frac{0.09x}{1.09x}\times 100[/tex]
= 8.26%
≈ 8.3%
Therefore, customer will see 8.3% saving.