KUIS Place Corporation had the following income statement for the current year: Sales Variable expenses Contribution margin Fixed expenses Operating income $25,0001 - 15,000 $10,000 4,000 S 6.000 Required: Calculate the operating leverage ratio. If sales increase by 20%, what will be the percentage change in income? If sales increase by $15,000, how much will income increase? ut, C. c 011 were as follows