a video game sells at gamestop for $14.99. Gamestop marks the game up at 40% of the selling price. Whats the cost of the game to Gamestop

Hello!
In your problem the equation will look like this:
Original Price + (Orig. x percent)

14.99 + (14.99 x .40)
                  =5.99
    14.99 + 5.99
          =$20.98

I Hope this Helps!!