4.5 pts Question 23 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 cam an after-tax net income of $48,000? $780,000 $300,000 $420,000 5520.000 $460,000