Furniturindo sells chairs, tables, and cupboards. Unit cost and sales data shown below: Total fixed costs are Rp. 16.920 .000 .000 . Required: 1. Calculate the weighted-average contribution margin/unit ( 25 points). 2. Compute and proof the break-even point for each product in units. ( 25 points) 3. Furniturindo is considering buying a new machine. If a new machine is purchased, it will increase fixed costs by 30% and decrease direct labor variable costs by 60%. Is it better to buy a new machine or not if the target is to decrease the BEP units? Detail the calculation. (50 points)