Spring Companys cost structure is dominated by variable costs with a contribution margin ratio of 0.25 and fixed costs of $100,000. Every dollar of sales contributes 25 cents toward fixed costs and profit. The cost structure of a competitor, Winters Company, is dominated by fixed costs with a higher contribution margin ratio of 0.80 and fixed costs of $430,000. Every dollar of sales contributes 80 cents toward fixed costs and profit. Both companies have sales of $600,000 per month. Required: a. Compare the two companies cost structures. b. Suppose that both companies experience a 20 percent increase in sales volume. By how much would each companys profits increase?