Comenco Company's cost formula for its wages and salaries is $2.280 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 95 trips. The actual wages and salaries for the month was $22,120. The wages and salaries in the planning budget for August would be: $22,120 $18,000 $21,280 $20,280