Forrester Company is considering buying new equipment that would increase monthly fixed costs from $360,000 to $445,500 and would decrease the current variable costs of $60 by $15 per unit. The selling price of $100 is not expected to change Forrester's current break-even sales are $900,000 and current break-even units are 9,000. If Forrester purchases this new equipment, the revised contribution margin ratio would be