8. Literal Equations and Dimensional Analysis
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It does not matter which we calculate first, the tax or the discount.
$ 52.43
Note that it does not matter which we calculate first, the tax or the discount. We will begin by adding the tax to the original price. Then we will subtract the discount.
To calculate the tax on the dress, we can multiply $70 by 7 % in its decimal form.
Now that we know the price including tax, we can calculate the discount by multiplying this price by 30 % in decimal form.
When $22.47 is subtracted from $74.90, we get the discounted price including tax. 74.90-22.47=$ 52.43