Amount paid by Ethan to buy a video game on sale of 20% with usual cost of $39.99 is equal to $32 ( nearest cent ).
As given in the question,
Usual cost of Video game bought by Ethan = $39.99
Sale discount received by Ethan on video game = 20%
Let 'x' be the amount paid by Ethan for video game.
Discount amount = 20% of $39.99
= ( 20 / 100 ) × 39.99
= 799.8/100
= $ 7.998
= $7.99
Amount to be paid by Ethan 'x' = $39.99 - $7.99
= $32 ( nearest cent)
Therefore, the amount paid by Ethan to purchase a video game on sale discount of 20% is given by $32.
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