The Purplemath Forums

Mr. Scrooge started out with $300 more than Mr. Marely. After 100 days of hoarding, Mr. Scrooge had less than Mr. Marley had after just 70 days. Mr. Marely had been saving $10.00 per day. What is the largest amount per day that Mr. Scrooge might have been saving? i have no idea what to do... please ...