Wynn, inc. manufactures beanies. the budgeted units to be produced and sold are below: expected production expected sales august 3,500 2,900 september 2,800 3,900 it takes 18 yards of yarn to produce a beanie. the company's policy is to maintain yarn at the end of each month equal to 5% of next month's production needs and to maintain a finished goods inventory at the end of each month equal to 20% of next month's anticipated production needs. the cost of yarn is $0.20 a yard. at august 1, 3,150 yards of yarn were on hand. compute the budgeted cost of purchases.