This problem has been solved! see the answer your company is reviewing a project with estimated labor costs of $21.20 per unit, estimated raw material costs of $37.18 a unit, and estimated fixed costs of $20,000 a month. sales are projected at 42,000 units over the one-year life of the project. all estimates are accurate within a range of plus or minus 5 percent. what are the total variable costs for the best-case scenario?