Yellow Press, Inc., buys paper in 1.500-pound rolls for printing. Annual demand is 2,000 rolls. The cost per roll is $500, and the annual holding cost is 12 percent of the cost. Each order costs $55. a. How many rolls should Yellow Press order at a time? Yellow Press should order |:| rolls at a time. (Enter your response rounded to the nearest whole number.) b. What is the time between orders? (Assume 275 workdays per year.) The time between orders is D days. (Enter your response rounded to one decimal place.)