Compute the contribution margin per unit and the number of tickets Funday Park must sell to break

Question:

Compute the per unit and the number of tickets Funday Park must sell to break even. Perform a numerical proof to show that your answer is correct?
Use the following information to complete Short Exercises.
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.
Contribution Margin
Contribution margin is an important element of cost volume profit analysis that managers carry out to assess the maximum number of units that are required to be at the breakeven point. Contribution margin is the profit before fixed cost and taxes...