Please show all your work and make sure to answer all parts of the question for a good rating. Thank you!

1. Given the following information for an Industrial 3D Printing Machine from a small manufacturer: Price/machine Variable Cost/machine Fixed Cost/machine $200K $80K $40K a) (1 pt) Using the contribution margin, how many trailers must be produced and sold in a month to make $600K profit? Use the correct units when solving and showing your work. b) (1 pt) Using the contribution margin ratio, what is the gross revenue/month to make $800K/month in profit? Use the proper units when solving and showing your work