(Ratio analysis) The Mitchem Marble Company has a target current ratio of 2.0 but has experienced some difficulties financing its expanding sales in the past few months. At present the firm has a current ratio of 2.5 and current assets of $2.5 million. If Mitchem expands its receivables and inventories using its short-term line of credit, how much additional short-term funding can it borrow before its current ratio standard is reached