What amount of total operating income can Gonzalez A/C and Heating expect if sales of units fall by 30%? Assume Gonzalez A/C and Heating only has one unit that it sells. Gonzalez A/C and Heating - Current Year Sales in units: 200 Revenues $1,200,000 Variable Expenses 500,000 Contribution Margin 700,000 Fixed Expenses 300,000 Operating Income 400,000