Victory tires company makes a special kind of racing tire. variable costs are $220, and fixed costs are $31,000 per month. victory sells 500 units per month at a price of $320. the company believes that it can boost the price if the tire qulity is upgraded. if so, the variable cost will go up to $230 and the fixed costs will rise by 50%. the ceo wishes to increase the company's operating income by 10%. which price level would give the desired results?