I just need help calculating margin of safety in dollars

Lindstrom Company produces two tountain pen models. information about its products follows: Lindstrom's fixed costs total $80,500 Required: 1. Determine Lindstrom's weighted-average unit contribution margin and weighted-average contribution margin ratio. 2. Calculate Lindstrom's break-even point in units and in sales revenue. 3. Calculate the number of units that Lindstrom must sell to eam a $150,000 profit. 4. Calculate Lindstrom's margin of safety (in units and sales dollars) and margin of safety as a percentage of sales based on the sales data provided in the table above. Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Calculate Lindstrom's margin of safety (in units and sales dollars) and margin of safety as a percentage of sales based on the sales data provided in the table above. Note: Round your margin of safety in units to the nearest whole number, Margin of Safety in Dollars to 2 decimal places, and your percentage of sales answer to 2 decimal places (i.e. 0.1234 should be entered as 12.34%% )