Comenco Company's cost formula for its wages and salaries is $3,150 per month plus $200 per camping trip. For the month of August, Comenco planned to take customers on 90 trips, but actually took customers on only 100 trips. The actual wages and salaries for the month was $22,120. The wages and salaries in the flexible budget for August would be: $22,120 $21150 $18,000