how to solve for a b c?

Baird Educational Services had budgeted its training service charge at $73 per hour. The company planned to provide 34.000 hours of training services during the year. By lowering the service charge to $68 per hour, the company was able to increase the actual nurnber of hours to 35,800 . Required o. Determine the sales volume variance, and indicate whether it is favorable (F) or unfavorable (U). (Select "None" if there is no affect (i.e., zero vorionce).) b. Determine the flexible budget variance, and indicate whether it is favorable (F) or unfavorable (U). (Select "None" if there is no effect (i.e., zero variance)) c. Did lowering the price of training services increase revenue