Spring Companys cost structure is dominated by variable costs with a contribution margin ratio of 0.30 and fixed costs of $102,000. Every dollar of sales contributes 30 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 0.70 and fixed costs of $306,000. Every dollar of sales contributes 70 cents toward fixed costs and profit. Both companies have sales of $510,000 per month.

	SPRING COMPANY			WINTERS COMPANY
	Amount	Percentage		Amount	Percentage
Sales			%			%
Variable cost
Contribution margin			%			%
Fixed costs
Operating profit			%			%

b. Suppose that both companies experience a 15 percent increase in sales volume. By how much would each companys profits increase?