Lindstrom Company produces two fountain pen models. Information about its products follows: shy Lindstrom's fixed costs total $81,500. 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 earn a $150,000 profit. 4. Calculate Lindstrom's margin of sdfety (in units and sales dollars) and margin of safety as a percentage of sales based on the sales data provided in the table above