Raphael paid $656 for a camera during a 20% off sale. What was the camera's regular price? Please work the problem and show your work so I can understand it better.
The answer is $820. I found this by 0.8x = 656 (Remember, a 20% discount means that it costs 80%, or 0.8, of the original price) Then, divide 0.8 on both sides: 0.8x/0.8 = 656/0.8 This leaves you with: x = 820