Use Polya's four-step problem-solving method to solve. State the strategy used in Step 2- Devise a plan.
In consecutive turns of a monopoly game, Stacy first paid $800 for a hotel. She then lost half her money when she landed on Boardwalk. Next, she collected $200 for passing GO. She then lost half her remaining money when she landed on Illinois Avenue. Stacy now has $2500. How much did she have before she purchased the hotel?