For Swifty Corporation, sales is $560000, variable expenses are $336000, and fixed expenses are $140000. Swifty's contribution margin ratio is 15%. 25%. 40%. O 60%. For Swifty Corporation, sales is $560000, variable expenses are $336000, and fixed expenses are $140000. Swifty's contribution margin ratio is 15%. 25%. 40%. O 60%