S7-15. Compute margin of safety (Learning Objective 5) Vicki sells authentic Amish quilts on her website. Suppose Vicki expects to sell 1,000 quilts during the coming year. Her average sales price per quilt is $250, and her average cost per quilt is $150. Her fixed expenses total $50,000. Compute her margin of safety a. in units (quilts). b. in sales dollars. c. as a percentage of expected sales