Johnson Electronics is considering extending trade credit to some customers previously considered poor risks. Sales would increase by $170,000 if credit is extended to these new customers. Of the new accounts receivable generated, 5 percent will prove to be uncollectible. Additional collection costs will be 4 percent of sales, and production and selling costs will be 76 percent of sales. a. Compute the incremental income before taxes. Incremental income before taxes $ b. What will the firm's incremental return on sales be if these new credit customers are accepted? (Round the final answer to 2 decimal place.) Incremental return on sales c. If the receivable turnover ratio is 3 to 1, and no other asset buildup is needed to serve the new customers, what will Johnson Electronics' incremental return on new average investment be? (Do round intermediate calculations. Round the final answer to the nearest whole percentage.) Incremental return on new average investment