Fast Turnstiles Co. is evaluating the extension of credit to a new group of customers. Although these customers will provide $432,000 in additional credit sales, 9 percent are likely to be uncollectible. The company will also incur $17,500 in additional collection expense. Production and marketing costs represent 77 percent of sales. The firm is in a 35 percent tax bracket and has a receivables turnover of four times. No other asset buildup will be required to service the new customers. The firm has a 12 percent desired return. a-1. Calculate the incremental income after taxes.