Norm’s management consultants has found that only 10% of its invoiced amounts are paid in the same month that the work is completed. sixty percent are paid in the month after the work is completed and 30% are paid in the second month after the work is completed. during december 2012, norm’s invoiced $200,000 to clients. projected revenues for the first three months of 2013 are given below: month revenue january $180,000 february 215,000 march 220,000 what is the expected accounts receivable balance at march 31, 2013?