The Table Clock Company sells a particular clock for $70. The variable costs are $17 per clock and the breakeven point is 270 clocks. The company expects to sell 320 clocks this year. If the company actually sells 490 clocks, what effect would the sale of additional 170 clocks have on operating income? Explain your answer. The sale of an additional 170 clocks would operating income by the amount of The total effect would amount to