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1. Answer

   Ethan will pay $31.99 with the discount.

   Step-by-step explanation:

   1. you need to set it up as a ratio (of course, you do not need to do this, but it is easier for me to do it this way)

   2. the ratio will look like this: 39.99/100% x/20%

   3. all we need to do from here is to cross multiply!

   4 39.99 x

   ———- = ———-

   100 20

   -price is on the top and percent on the bottom

   -you would now do 39.99 times 20

   -then divide by 100

   5. once you have 20% of 39.99, you need to subtract that answer from the total

   6. 39.99 – 7.998 = 31.992 (you need to round to the nearest hundredth)

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