A car dealer is trying to reduce the number of days of inventory held at any given time on the lot. Assume that he projects the daily sales rate as the last two months averaged. Assume that the monthly sales rate for August was 15 cars/day, September was 16 cars/day, October was 14 cars/day, and November was 10 cars/day. Given an inventory of 528 cars at the start of November and 416 at the start of December, determine the number of days of inventory on hand at the start of November and December (also assume each month has EXACTLY 30 days of sales)