The Round Clock Company sells a particular cock for $85. The variable costs are $21 per clock and the breakeven point is 270 clocks. The company expects to sell 320 clocks this year. If the company actually sells 440 clocks, what effect would the sale of additional 120 clocks have on operating income? Explain your answer. operating income The sale of an additional 120 clocks would the amount of The total effect would amount to $