Question 23 4.7 pts Hydro Systems Engineering Associates, Inc, provides consulting services to city water authorities. The consulting firm's contribution-margin ratio is 40%, and its annual fixed expenses are $120,000, The firm's income tax rate is 25%. What level of revenue for consulting services must the firm generate to earn an after-tax net income of $48,000? O $460,000 $420,000 $780,000 $520,000 $300,000