Determine the? formula, then compute the sales in units to achieve a profit of $ 20 comma 000?, assuming no change in selling price and assuming the following given? information: Selling price per? unit, $ 40?; total fixed? expenses, $ 101 comma 000?; variable expenses per? unit, $ 28. Assume that variable expenses are reduced by 25?% per? unit, and the total fixed expenses are increased by 10?%.