Please provide a detailed solution:

Problem 04 Gosnell Company produces two products: squares and circles. The projected income for the coming year, segmented by product line, follows: Squares Circles Total Sales P300,000 P2,500,000 P2,800,000 Less: Variable expenses 100,000 500,000 600,000 Contribution margin P200,000 P2,000,000 P2,200,000 Less: Direct fixed expenses 28,000 1,500,000 1,528,000 Product margin P172,000 P 500,000 P672,000 Less: Common fixed expenses 100,000 Operating income P572,000 The selling prices are P30 for squares and P50 for circles. Required: 1. Compute the number of units of each product that must be sold for Gosnell Company to break even. 2. Compute the revenue that must be earned to produce an operating income of 10 percent of sales revenues. 3. Assume that the marketing manager changes the sales mix of the two products so that the ratio is three squares to five circles. Repeat Requirements 1 and 2. 4. Refer to the original data. Suppose that Gosnell can increase the sales of squares with increased advertising. The extra advertising would cost an additional P45,000, and some of the potential purchasers of circles would switch to squares. In total, sales of squares would increase by 15,000 units, and sales of circles would decrease by 5,000 units. Would Gosnell be better off with this strategy