What is 40 percent off 40?

Answer 1

Good marketing. No really, it's a way of putting the consumer into a "discount" state of mind, because "that's almost half-price!". However, a 40% discount from an unusually highly inflated price still leaves a wide profit margin for the seller.

Answer 2

40.0 X 40% = 16.0 (40.0 less 16.0 = 24.0)