please make a detailed explanation and write everything out without skipping steps.

7 uestion 9: Castle Corporation Castle Corporation has the following data pertaining to two types of products manufactured: Per unit Product Y Product Z Sales price $120 $500 Variable costs S 70 $200 Fixed costs total S300,000 annually. The expected mix in units is 60 percent for Product Y and 40 percent for Product Z. (Hint: the sales mix here is 06Y with 0.4% for each "bag" of products) Refer to Castle Corporation. How much is Castle's break-even point sales in units? a. b. Refer to Castle Corporation. What is its break-even point in sales dollars