This is my last study guide problem and I'm having trouble

Problem: letterman Office Service & Supply (LOSS) sells a variety of office equipment including the Executive office chair. The Executive sells for $175. Expected sales for next year are 10,000 units (sales estimates made by management are usually within 5%). LOSS is considering a change in its manufacturing process. The accountants and engineers have developed the following two cost structures: Current Manufacturing System: $125 variable cost per unit and $400,000 in fixed costs. Alternate Manufacturing System: $75 variable cost per unit and $927,000 in fixed costs. At what level of sales will LOSS be indifferent between the two manufacturing plans? Indifference Point in units: _____ What are the break-even points in units for the two manufacturing plans? Current System break-even:_______ Alternate System break-even: _____ What arc the margins of safety of the two plans in units and percentage? Current System MOS in units: ______ Alternate System MOS in units: _____ Current System MOS %:______ Alternate System MOS %: _____ Which plan would you choose for LOSS? Why? What if sales are expected to increase? What are expected to decrease