Number of units Budget 100 Results 110 $1.000 $1.100 Sales revenue Variable expenses Direct materials Direct labor Manufacturing overhead Total variable expenses 200 300 240 340 120 100 Contribution margin Fixed expenses Selling and administrative Manufacturing overhead Total fixed expenses 100 200 350 Net operating income $100 $50 Average Operating Assets $1.000 $1.000 Standards Direct Materials Direct Labor 1 pound per unit at $2 per pound 12 minutes per unit at $15 per hour Instructions 2 Using the actual results, calculate return on investment