Nissan appliances bought two dozen camcorders at a total cost of $3,864. the markup on the camcorders is 30% of the selling price. what was the original selling price of each camcorder?

Well, they bought 12 at 3,864, so each unit is 3864/12 or 322 bucks.

now, we know that those 322 are including a 30% markup, so, the orignal price have been bumped up by 30%, now, if we take say "x" to be the original price, or 100%, then 322 is he 100% + 30%, or 130%, what's "x" anyway?

The density of the cube is 40