Please help me to solve question 4.28 and 4.30.

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Horngren's Cost Accounting: A Managerial Emphasis eBook, 3rd Edition 1. Calculate the break-even point for Knitwear Ltd in each country in: (a) units sold and (b) revenues 2. If Knitwear Ltd plans to produce and sell 80000 woollen coats in 2019, what is the budgeted profit for each of the three manufacturing locations? Comment on the results. 4.28*x Sales mix Objectives 1, 2,7 Jane's Clothing Design sells skirts for girls and women. The average selling price and variable cost for each product are as follows: Girls' skirts Women's skirts Selling price $60 $80 $42 $56 Variable costs The fixed costs are $38400. The sales mix of girls' skirts to women's skirts is 35%/65%. That is, 35% of skirts sold are girls' skirts and 65% are women's skirts. Required 1. What is the break-even point in units for each type of skirt? 2. What is the operating profit when sales total 9000 skirts? 4.29 Sales mix, new and upgrade customers Objectives 1, 2, 4,7 Ziggy 1-2-3 is a top-selling electronic spreadsheet product. Ziggy is about to release version 5.0. It divides its customers into two groups: new mer those who previnusly purchased Ziggy 1-2-3, 4.0 or earlier versions). Although the same physical product is 4.30 * Sales mix, three products Objectives 1, 2, 7 The Kenosha Company has three product lines of beer mugs-A, B and C-with contribution margins of $5, $4 and $3, respectively. The chief executive officer forsees sales of 175000 units in the coming period, consisting of 25000 units of A, 100000 units of B and 50000 units of C. The company's fixed costs for the period are $351000. Required 1. What is the company's break-even point in units, assuming that the given sales mix is maintained? 2. If the sales mix is maintained, what is the total contribution margin when 175000 units are sold? What is the operating profit? 3. What would operating income be if the company sold 25000 units of A, 75000 units of B and 75000 units of C? What is the new break- even point in units if these relationships persist in the next period? 4. Comparing the break-even points in requirements 1 and 3, is it always better for a company to choose the sales mix that yields the lower break-even point? Explain