Question

9. Delia bought $45 dollars worth of clothes, but the total including sales tax came to $54. What is

the sales tax rate that Delia paid?
of the vehicles

Answer 1

20%

Explanation:

You want to know the tax rate if the added tax brings the cost of $45 purchase to a total of $54.

Multiplier

The multiplier applied to a purchase cost to add the tax is ...

(1 +r)

where r is the tax rate.

Here, that means ...

45(1 +r) = 54

1 +r = 54/45 = 1.20

r = 1.20 -1 = 0.20 = 20%

The tax rate Delia paid on the articles she bought was 20%.