Please explain this question as well.

Problem 6.39A a-d Ronald Enterprises Ltd. has estimated the following costs for producing and selling 18,600 units of its product: Direct materials Direct labour Variable overhead Fixed overhead Variable selling and administrative expenses Fixed selling and administrative expenses $93,000 130,200 37,200 30,000 55,800 45,000 Ronald Enterprises' income tax rate is 40%. Given that the selling price of one unit is $37, calculate how many units Ronald Enterprises would have to sell in order to break even. Break-even units Assume the selling price is $42 per unit. Calculate how many units Ronald Enterprises would have to sell in order to produce a profit of $25,100 before taxes. Target units units Calculate what price Ronald Enterprises would have to charge in order to produce a profit of $27,000 after taxes if 7,500 units were produced and sold. Ronald Enterprises should charges per unit Calculate what price Ronald Enterprises would have to charge in order to produce a before-tax profit equal to 30% of sales if 8,700 units were produced and sold. (Round answer to 2 decimal places, e.g. 15.25.) Ronald Enterprises should charge per unit