Final answer:
The original price of the tablet is $400.
Step-by-step explanation:
To find the original price of the tablet, we need to determine the price before the 20% discount. Let's denote the original price as P. The tablet is on sale for 20% off, so the discounted price is 80% of the original price. We can set up the equation:
80% of P = $320
To solve for P, we divide both sides of the equation by 80% (or 0.8):
P = $320 / 0.8 = $400
Therefore, the original price of the tablet is $400.