Funday Park competes with Cool World by providing a variety of rides. Funday Park sells tickets at $70 per person as a one-day entrance fee. Variable costs are $42 per person, and fixed costs are $170,800 per month. The breakeven number of tickets is 6,100. If Funday Park expects to sell 8,100 tickets, compute the margin of safety in tickets and in sales dollars. ... Begin by selecting the formula labels and then entering the amounts to compute the margin of safety in units. Margin of safety in units =