Regular price:$28 20% off

This wants you to find 20% of $28 then subtract it from $28 to get the price of the item with a 20% discount

20% of 28 is found by doing 0.2 * 28.

0.2 * 28 = 5.6

28 (normal price) - 5.6 (20% discount) = 22.4

So the price of this item with a 20% discount is $22.40.

Answer:

$22.40